How to Increase Milk Supply While Supplementing With Formula

Posted on February 09, 2026

Introduction
Understanding the Supply and Demand Connection
The Importance of Frequent Milk Removal
Maximizing Every Nursing Session
Utilizing Paced Bottle Feeding
Nourishing Your Body for Lactation
Creating a Plan to Decrease Formula
Overcoming the Mental Hurdles
Conclusion
FAQ

Introduction

If you have found yourself reaching for a bottle of formula while also trying to maintain your breastfeeding journey, you are not alone. Many parents feel a sense of worry or even guilt when they begin supplementing, but we want you to know that your worth is not measured in ounces. Whether you are supplementing due to a medical recommendation, slow weight gain, or a return to the workplace, it is entirely possible to protect and even boost your milk production.

At Milky Mama, we believe that every drop counts and that with the right support, you can reach your feeding goals. This post will explore evidence-based strategies to help you navigate "combo feeding" while working to bring your supply back up. We will cover the mechanics of milk production, effective pumping routines, and how to safely transition back toward more frequent breastfeeding. Our goal is to provide you with the clinical expertise and emotional encouragement you need to feel confident in your body again.

Understanding the Supply and Demand Connection

The most important thing to understand about lactation is that it operates on a system of supply and demand. Your brain receives signals to produce milk based on how much milk is removed from your breasts. When a baby nurses effectively, they send a message to your body to keep the "factory" running.

When you introduce formula, a common challenge arises. If the baby receives two ounces of formula instead of two ounces of breast milk, your body doesn't know that those two ounces were needed. Because that milk wasn't removed from your breasts, your body may begin to slow down production. To increase your supply while supplementing, you must find ways to "tell" your body that the demand is still high.

The Role of Lactogenesis

Lactogenesis is the clinical term for the beginning of milk production. After the initial surge of milk comes in during the first week postpartum, your supply shifts from being driven by hormones to being driven by milk removal. This is why frequent emptying of the breast is the most effective way to see an increase. If milk stays in the breast, a protein called Feedback Inhibitor of Lactation (FIL) builds up. This protein tells your body to stop making milk. By removing milk frequently, you keep FIL levels low and production levels high.

Navigating the "Top-Off" Trap

Many parents fall into a cycle where they nurse, then give a bottle of formula (a "top-off"), and then find the baby sleeps longer or nurses less at the next session. While it is important to ensure your baby is fed, this can lead to a decrease in supply if you aren't careful. The key to increasing supply while supplementing is ensuring that every time a bottle is given, your breasts receive a signal to produce.

Key Takeaway: Milk production is a local process. If you want more milk, you must remove milk more often and more thoroughly to signal the brain to increase the supply.

The Importance of Frequent Milk Removal

If you are supplementing because your baby is not yet nursing effectively, the breast pump becomes your most valuable tool. To increase your supply, you should aim to remove milk as often as your baby would naturally eat, which is typically 8 to 12 times in a 24-hour period. For more guidance on balancing nursing and pumping, explore this guide to pumping and breastfeeding.

Pumping When the Baby Receives a Bottle

If your baby is receiving a bottle of formula, your body needs to "see" that a feeding is happening. This is often called "proportional pumping." If you give a bottle and don't pump, your supply will likely continue to drop. Aim to pump for 15 to 20 minutes every time your baby receives a supplemental feeding. This keeps your demand high even if the baby isn't currently at the breast.

Power Pumping for a Supply Boost

Power pumping is a technique designed to mimic a baby’s cluster feeding. Cluster feeding is when a baby nurses very frequently over a short period, which naturally happens during growth spurts to boost supply.

To power pump, choose one hour a day to follow this schedule:

Pump for 20 minutes
Rest for 10 minutes
Pump for 10 minutes
Rest for 10 minutes
Pump for 10 minutes

Many parents see a noticeable difference in their output after three to seven consecutive days of power pumping. It is most effective when done in the early morning hours when prolactin (the milk-making hormone) levels are at their highest.

Hand Expression After Feedings

Research shows that using your hands can significantly increase the amount of milk you can express. After you finish a nursing or pumping session, try two minutes of manual hand expression. This helps empty the breast more fully, which is a powerful signal for your body to create more milk for the next "order."

What to do next:

Set a timer to ensure you are removing milk at least every 3 hours.
Incorporate one power pumping session daily for one week.
Practice hand expression for two minutes after every morning pump.

Maximizing Every Nursing Session

If your baby is able to latch, you want to make sure they are getting as much milk as possible during their time at the breast. This ensures they stay satisfied longer and helps stimulate your production more effectively than a pump alone.

Skin-to-Skin Contact

Never underestimate the power of holding your baby close. Skin-to-skin contact releases oxytocin, which is the hormone responsible for the let-down reflex. The let-down reflex is when the small muscles in your breast contract to push milk into the ducts. Spending 20 minutes in skin-to-skin before or during a feeding can help your milk flow more easily and encourage a sleepy baby to stay awake and nurse.

Using Breast Compressions

Breast compressions are a simple way to keep the milk moving while your baby is nursing. When you notice your baby's sucking slow down or they start to look sleepy, gently squeeze your breast (in a C-hold, well back from the nipple). Hold the squeeze while the baby swallows, then release. This "boosts" the flow of milk, which keeps the baby interested and helps empty the breast more completely.

Switch Nursing

Instead of letting your baby stay on one side for 20 minutes, try switch nursing. Offer the first breast until the baby’s active swallowing slows down, then switch to the other side. You can switch back and forth multiple times during a single feeding. Each time you switch, the baby gets a fresh let-down of milk, which is often higher in fat (sometimes called hindmilk). This keeps the baby engaged and ensures both breasts are being stimulated repeatedly.

Utilizing Paced Bottle Feeding

When you are supplementing with formula, the way you give the bottle matters just as much as the formula itself. Many babies develop a "flow preference" because bottles usually provide a constant, fast flow of milk with very little effort. At the breast, a baby has to work for a let-down.

What is Paced Feeding?

Paced bottle feeding is a method that mimics the rhythm of breastfeeding. It allows the baby to be in control of the flow and prevents them from being overwhelmed by a fast-moving nipple.

Use a slow-flow nipple: Always use the slowest flow nipple available, regardless of the baby's age.
Hold the baby upright: Do not lay the baby flat. Sit them up so the bottle is horizontal to the floor.
Let the baby pull the nipple in: Don't force it. Tickle their lips and wait for them to open wide.
Pause frequently: Every 20 to 30 seconds, tip the bottle down so the nipple empties of milk. This allows the baby to take a breath and realize they are full.

By using this method, you make the transition between the breast and the bottle much easier for your baby. This reduces the risk of the baby refusing the breast in favor of the easier bottle.

Nourishing Your Body for Lactation

While milk removal is the most critical factor, your internal environment also plays a role. Breastfeeding is a metabolically demanding process, and your body needs adequate fuel to keep up.

Hydration and Electrolytes

Dehydration can negatively impact your milk volume. However, drinking plain water isn't always enough. Your body needs electrolytes to stay properly hydrated. At Milky Mama, we developed Pumpin Punch™ and Milky Melon™ to provide delicious hydration with added lactation-supportive ingredients. These drinks are a great way to stay hydrated while also giving your body a little extra support.

Nutritional Support and Galactagogues

A galactagogue is a substance that may help increase milk production. Many families find that incorporating specific herbs and foods into their diet provides the boost they need. Our Emergency Brownies are a favorite for many moms because they combine oats, flaxseed, and brewer’s yeast in a tasty treat. These ingredients are rich in iron and B vitamins, which are essential for nursing parents.

If you prefer herbal support, supplements like our Lady Leche™ or Pumping Queen™ can be integrated into your routine. These blends are formulated by our founder, Krystal Duhaney, who is an RN and IBCLC, to ensure they are rooted in clinical knowledge.

Note: This product is not intended to diagnose, treat, cure, or prevent any disease. Consult with your healthcare provider for medical advice before starting any new supplement.

A Note on What to Avoid

It is important to be cautious with what you consume while breastfeeding. We do not recommend using products containing certain herbs that may cause digestive upset for the baby or have inconsistent results for the parent. We always suggest focusing on nutrient-dense foods like leafy greens, whole grains, and healthy fats to support your overall wellness.

Key Takeaway: You cannot pour from an empty cup. Prioritize your hydration and nutrition to give your body the resources it needs to produce milk.

Creating a Plan to Decrease Formula

If your goal is to return to exclusive breastfeeding, you should do so gradually and under the guidance of a professional. Abruptly stopping formula can lead to dehydration or poor weight gain for the baby.

Monitoring Output

The best way to know if your supply is increasing is to watch your baby's diapers. After the first week of life, you should see at least six heavy wet diapers and three or more bowel movements in a 24-hour period. If you are decreasing formula and these numbers drop, it is a sign that you need to slow down the transition.

The "Ounce by Ounce" Method

Many lactation consultants recommend a gradual reduction. You might start by decreasing the amount of formula in each bottle by just half an ounce for a few days. Alternatively, you can try to replace one full formula feeding with a breastfeeding session and a pumping session.

Seeking Professional Guidance

Every breastfeeding journey is unique. If you are struggling to increase your supply while supplementing, we highly recommend booking a virtual lactation consultation with an IBCLC. They can help you create a customized "triple feeding" plan (breastfeed, pump, supplement) that is sustainable for your family and safe for your baby. We also offer online breastfeeding classes that cover these transitions in more detail.

Transition Tips:

Keep a log of how much formula the baby takes each day.
Don't skip middle-of-the-night pumping sessions; this is when milk-making hormones are highest.
Check in with your pediatrician weekly for weight checks during the transition.

Overcoming the Mental Hurdles

Breastfeeding challenges can be incredibly emotional. It is normal to feel frustrated or exhausted when you are trying to manage nursing, pumping, and bottle-feeding all at once. Please remember that you are doing an amazing job. Using formula is a tool to keep your baby healthy and fed while you work on your supply. It is not a sign of failure.

Dealing with "Under-Supply" Anxiety

Stress is the enemy of the let-down reflex. When you are stressed, your body produces adrenaline, which can block oxytocin. This makes it harder for your milk to flow, which can lead to even more stress. Try to find a small way to relax during your pumping or nursing sessions. Listen to a favorite podcast, use a warm compress on your breasts, or simply take five deep breaths.

Representation and Support

At Milky Mama, we believe that representation matters. Many Black breastfeeding moms and families from diverse backgrounds face unique barriers to receiving quality lactation support. We are committed to providing an inclusive space where every parent feels seen and supported. You deserve compassionate care that respects your culture and your individual goals.

Conclusion

Increasing your milk supply while supplementing with formula requires patience, consistency, and a clear plan. By focusing on frequent milk removal, using paced bottle feeding, and supporting your body with proper nutrition, you can move closer to your breastfeeding goals. Remember that breastfeeding is natural, but it doesn't always come naturally—and that is okay.

Focus on the "Demand": Pump every time the baby gets a bottle.
Practice Paced Feeding: Keep the baby interested in the breast by controlling bottle flow.
Nourish Yourself: Stay hydrated and eat nutrient-dense foods.

You’re doing an amazing job, and your commitment to your baby’s health is beautiful. Whether you end up exclusively breastfeeding or continuing with combo feeding, the bond you are building with your baby is what matters most. For more support and community, we are always here to help you navigate every step of your lactation journey.

FAQ

Can I really increase my supply if I’ve already started using formula?

Yes, it is definitely possible for many parents to increase their supply after starting formula. Since milk production is based on demand, you can boost your output by increasing the frequency of milk removal through pumping or nursing. It may take several days or even weeks of consistent effort to see a significant change, so patience is key. If you are unsure whether your supply is truly low, read this guide to signs of low milk supply.

How often should I pump if I am still giving my baby formula?

You should aim to pump every time your baby receives a bottle of formula to ensure your brain gets the signal that milk is needed. For most parents, this means pumping 8 to 10 times in a 24-hour period. If you are trying to increase a very low supply, adding one or two extra pumping sessions or a daily power pumping session can also be very helpful.

Will my baby stop wanting to breastfeed if I give them a bottle?

Some babies develop a preference for the fast, easy flow of a bottle, but you can prevent this by using paced bottle feeding. By holding the bottle horizontally and using a slow-flow nipple, you mimic the effort required at the breast. This makes it much easier for the baby to switch back and forth between the two without frustration.

How do I know if I am making more milk?

$19.80 USD

Subscribe & Save: 10% off

SHOP NOW

About Milky Mama

Support

Stay Connected