Breastfed babies naturally gain weight more slowly than formula-fed babies, especially after the first three months. That’s normal biology, not a problem. But if your baby’s weight gain has genuinely stalled or your pediatrician has flagged a concern, there are concrete steps you can take to increase how much milk your baby gets at each feeding and over the course of a day.
Check That the Right Growth Chart Is Being Used
Before changing anything about how you feed your baby, make sure slow gain is actually the issue. The growth chart your pediatrician uses matters more than you might think. The older CDC growth charts were built from data on mostly formula-fed babies. Only about half the infants in that dataset were ever breastfed, and by three months, just 33% were still nursing. If your baby is being plotted on those charts, a perfectly healthy breastfed growth pattern can look like a problem.
The WHO growth charts use breastfed infants as the standard. The CDC now recommends using the WHO charts for all children from birth to age two. Healthy breastfed babies gain weight more slowly than formula-fed babies throughout the first year, and that difference persists even after starting solid foods. Their length growth, however, is similar. If your baby is growing steadily along their own curve on the WHO chart, gaining length normally, producing plenty of wet and dirty diapers, and meeting developmental milestones, their weight trajectory may be exactly where it should be.
Feed More Often
The simplest way to increase total daily intake is to increase the number of feedings. For a newborn, that means nursing at least 8 to 12 times in 24 hours. If your baby tends to sleep long stretches, especially in the first few weeks, waking them to feed every two to three hours during the day can add meaningful volume. Some babies naturally cluster feed in the evening, bunching several shorter feedings close together. This is normal and actually helpful for weight gain because it increases the total amount of milk consumed before a longer sleep stretch.
You can also offer a “dream feed,” nursing your baby during a light sleep phase (usually around 10 or 11 p.m.) without fully waking them. The goal is simply to add one more feeding to the day’s total without disrupting anyone’s sleep more than necessary.
Finish One Breast Before Switching
The fat content of breast milk increases as a feeding progresses. Milk at the beginning of a feeding is thinner and more watery, while milk toward the end contains significantly more fat and calories. If you switch your baby to the second breast too quickly, they may fill up on lower-calorie milk from both sides without ever reaching the richer milk on either.
Let your baby nurse on one breast until they’ve clearly finished, either pulling off on their own or falling asleep. Then offer the second breast. At the next feeding, start on the side you finished with last time. This approach ensures your baby gets the full range of fat content at each session rather than skimming the surface on both sides.
Use Breast Compressions During Feeding
Breast compressions are one of the most effective and underused tools for increasing milk transfer. When your baby starts to slow down at the breast, switching from active swallowing to light nibbling or fluttery sucking, a gentle squeeze can restart the flow and keep them drinking.
Here’s how to do it: hold your breast with your free hand, thumb on one side and fingers on the other, positioned well behind the areola. When your baby stops actively swallowing, compress the breast firmly but not painfully. You should see them start swallowing again. Hold the pressure until swallowing stops, then release. The release lets milk flow back into the ducts and gives your hand a rest. Repeat until compressions no longer trigger swallowing, then switch to the other breast.
Compressions simulate a letdown reflex and often trigger a natural one. They help your baby get more milk overall, and specifically more of the higher-fat milk that comes as the breast empties more fully.
Rule Out Latch Problems and Tongue-Tie
A baby who is latched on but not transferring milk efficiently can nurse constantly and still gain weight slowly. The issue isn’t supply; it’s delivery. Tongue-tie is one of the most common physical causes of poor milk transfer, and it’s frequently missed, especially posterior tongue-ties that aren’t visible without a careful exam.
Signs that your baby may have a latch or tongue-tie problem include:
- Nipple shape after feeding: a flattened, creased, or lipstick-shaped nipple suggests the baby is compressing rather than drawing the nipple deeply
- A chomping or chewing suck instead of a rhythmic draw, sometimes with dimpled cheeks
- A sandpapery or rubbing sensation during nursing
- Constant hunger: a baby who never seems satisfied, never sleeps more than 30 minutes, or cluster feeds every single day rather than occasionally
- Excessive sleepiness: a baby who never fully wakes to feed and drifts off almost immediately at the breast
If any of these sound familiar, a lactation consultant or pediatric dentist experienced with tongue-ties can assess your baby’s tongue mobility, checking whether it can lift, extend, move side to side, and create the wave-like motion needed for effective nursing. When tongue-tie is limiting milk transfer, releasing it often leads to rapid improvement in both feeding efficiency and weight gain.
Boost Your Milk Supply
If your baby’s latch and feeding technique are solid but your supply is low, the most reliable way to increase production is to remove milk more frequently. Your body calibrates supply to demand: the more often the breast is emptied, the more milk it makes.
Adding a pumping session after feedings, even just for five to ten minutes, signals your body to produce more. If you want a more aggressive approach, power pumping mimics cluster feeding and can help jumpstart production. In a single one-hour session, you pump for 20 minutes, rest 10, pump 10, rest 10, then pump a final 10 minutes. Done once a day for several days, this can noticeably increase output.
Skin-to-skin contact also stimulates the hormones that drive milk production. Holding your baby against your bare chest before and between feedings isn’t just comforting; it’s physiologically productive.
What Maternal Diet Can and Can’t Do
There’s a widespread belief that eating more or eating specific foods will make your milk richer. The reality is more nuanced. The overall calorie and protein content of breast milk is remarkably stable regardless of what you eat. Your body prioritizes your baby, drawing from your own stores if necessary.
What your diet does influence is the type of fat in your milk. Eating fish, for example, increases the concentration of omega-3 fatty acids like DHA and EPA. The types of polyunsaturated fats you eat are generally reflected in your milk’s fat profile. But this changes the nutritional quality of your milk, not its total calorie count. Staying well-fed and well-hydrated matters for maintaining your supply, but no specific food will make your milk more calorie-dense.
When Weight Loss Needs Immediate Attention
Newborns normally lose weight in the first few days after birth, typically recovering to birth weight by about two weeks. The concern threshold is when a newborn’s weight loss exceeds what’s expected for their age in hours. The Academy of Breastfeeding Medicine recommends evaluating supplementation when a newborn’s weight loss crosses the 75th percentile for their age, meaning they’ve lost more weight than 75% of newborns at the same number of hours old. Your pediatrician or hospital may use a tool called the Newborn Weight Tool (NEWT) to track this precisely.
After the newborn period, signs that weight gain needs medical attention include dropping across two or more percentile lines on the WHO growth chart, fewer than six wet diapers a day after the first week, or a baby who is lethargic and difficult to wake for feedings. These situations call for a feeding evaluation and possibly temporary supplementation with pumped milk or formula while you work on improving direct breastfeeding.
If supplementation is recommended, it doesn’t have to mean the end of breastfeeding. Many families supplement temporarily while addressing the underlying issue, whether that’s supply, latch, tongue-tie, or feeding frequency, and return to exclusive breastfeeding once weight gain stabilizes.