A 2-week-old baby typically drinks 2 to 3 ounces per feeding, eating 8 to 12 times over 24 hours. That works out to roughly 16 to 24 total ounces per day, though every baby is slightly different. The exact amount depends on your baby’s weight, whether they’re breastfed or formula-fed, and how quickly they’re growing.
How Much Per Feeding at 2 Weeks
At birth, most babies start with just 1 to 2 ounces per feeding. By two weeks, their stomach has grown to about the size of a ping-pong ball, holding roughly 2 ounces at a time. Most babies at this age comfortably take 2 to 3 ounces per session, though some will want slightly more or less depending on how recently they last ate.
For formula-fed babies, there’s a useful rule of thumb: babies need about 2.5 ounces of formula per pound of body weight per day. A 2-week-old who weighs 8 pounds, for example, would need around 20 ounces total across the day. Spread over 8 to 10 feedings, that’s about 2 to 2.5 ounces each time. The upper limit for any baby is about 32 ounces in 24 hours, but a 2-week-old won’t be anywhere near that.
For breastfed babies, measuring exact ounces is harder since milk comes directly from the breast. Instead of counting ounces, you count feedings. Eight to 12 nursing sessions in 24 hours is the standard range at this age, and each session might last 10 to 20 minutes per side. Breastfed babies tend to eat more frequently than formula-fed babies because breast milk digests faster.
How Often to Feed
Two-week-old babies eat frequently, typically every 2 to 3 hours around the clock. That means you’re feeding 8 to 12 times in a 24-hour period, including overnight. At this age, babies shouldn’t go long stretches without eating, even at night. Their small stomachs empty quickly, and they need consistent intake to support rapid growth.
You don’t need to stick to a rigid schedule. Feeding on demand, meaning whenever your baby shows signs of hunger, is the most reliable approach at this stage. Babies vary from day to day. Some feedings will be closer together (cluster feeding is common in the evenings), and others might be spaced a bit further apart.
Hunger and Fullness Cues to Watch
Your baby will tell you when they’re hungry before they start crying. Early hunger cues include fists moving toward the mouth, head turning as if searching for a breast, lip smacking, sucking on hands, and becoming more alert and active. Crying is actually a late sign of hunger, a signal of distress rather than a first request for food. Catching those earlier cues makes feeding smoother for both of you.
Fullness cues are just as important. A satisfied baby will pull away from the breast or bottle, turn their head away from the nipple, and visibly relax their body, often opening their fists. If your baby shows these signs, the feeding is done even if there’s still milk in the bottle. Pushing a baby to finish a bottle can lead to overfeeding.
How to Tell Your Baby Is Getting Enough
The simplest daily check is diaper output. After the first five days of life, a well-fed newborn produces at least 6 wet diapers per day. The number of dirty diapers varies more, but consistent wet diapers are a reliable indicator that your baby is staying hydrated and taking in enough milk.
Weight gain is the other key marker. In the first three months, babies typically gain 5 to 7 ounces per week. Most newborns lose a small amount of weight in the first few days after birth, but they should be back to their birth weight by around 10 to 14 days old. Your pediatrician will track this at early checkups, so you don’t need a home scale.
Signs of Overfeeding
Overfeeding is more common with bottle feeding than breastfeeding, since milk flows from a bottle with less effort and it’s easier to encourage a baby to keep drinking. A baby who’s been fed too much often spits up more than usual, has loose stools, seems gassy, and cries from belly discomfort. Swallowing extra air during a large feeding adds to the problem. If your baby regularly seems uncomfortable after eating, try offering slightly less milk and see if they still seem satisfied.
The fix is straightforward: follow your baby’s fullness cues rather than targeting a specific number of ounces. Pausing midway through a bottle to burp and check if your baby still seems interested can help prevent overdoing it.
Breastfed vs. Formula-Fed Differences
Breastfed babies tend to eat more often but take in slightly less per session compared to formula-fed babies. This is normal. Breast milk composition changes throughout a feeding and throughout the day, and breastfed babies are better at self-regulating their intake since they control the flow.
Formula-fed babies may settle into a slightly more predictable pattern sooner, partly because formula takes longer to digest. If you’re formula feeding, the 2.5 ounces per pound per day calculation gives you a solid starting point. But treat it as a guideline, not a rule. Some days your baby will want more, some days less. Both are fine as long as weight gain stays on track and diaper counts look normal.