A one-week-old baby eats about 1.5 to 2 ounces per feeding, whether from breast or bottle. At this age, your baby’s stomach is roughly the size of an apricot, holding 45 to 60 milliliters at a time. That small capacity means feedings are frequent, typically every 2 to 3 hours around the clock.
Feeding Amounts by Type
If your baby is breastfed, expect 8 to 12 nursing sessions in a 24-hour period. Each session may last anywhere from 10 to 20 minutes per breast, though the duration varies widely between babies. You won’t be able to measure exact ounces at the breast, but your body is producing significantly more milk than it was just days ago. In the first two days after birth, total milk production is under 100 milliliters for the whole day, mostly thick colostrum measured in drops. By day 7, that number jumps to around 850 milliliters, a dramatic ramp-up that matches your baby’s growing appetite.
If your baby drinks formula, the CDC recommends starting with 1 to 2 ounces every 2 to 3 hours. By the end of the first week, most formula-fed babies settle into the higher end of that range, taking about 2 ounces per feeding. Over a full day, that adds up to roughly 16 to 24 ounces total, spread across 8 to 12 feedings.
Why Feedings Are So Frequent
That tiny apricot-sized stomach empties fast. Breast milk digests in about 90 minutes, and formula takes slightly longer. This is why your baby wakes and shows hunger signs so often, even overnight. It’s not a sign that something is wrong or that your milk isn’t enough. It’s simply how newborn digestion works.
You may also notice your baby wanting to eat even more frequently during certain stretches, especially in the evening. This is called cluster feeding, where a baby nurses every 30 minutes to an hour for several hours in a row. Cluster feeding is normal at this age and doesn’t mean your supply is low. Babies often cluster feed before a longer stretch of sleep, and the frequent nursing also signals your body to produce more milk to keep up with demand. A growth spurt around 2 to 3 weeks old can trigger another round of intense cluster feeding.
How to Tell Your Baby Is Hungry
Crying is actually a late hunger signal. Your baby will show earlier cues that are easier to catch:
- Rooting: turning their head toward your breast or a bottle
- Hand movements: bringing fists to their mouth
- Lip activity: smacking, licking, or puckering their lips
- Clenched hands: tight fists often signal hunger in newborns
When your baby is full, the signs flip. They’ll close their mouth, turn away from the breast or bottle, and visibly relax their hands. Following these cues rather than watching the clock helps your baby regulate their own intake naturally.
How to Know Your Baby Is Getting Enough
Since you can’t measure what a breastfed baby takes in, diaper output is the most reliable daily indicator. After day 5, a well-fed newborn produces at least 6 wet diapers per day. The number of dirty diapers varies, but you should see several, often one after nearly every feeding in breastfed babies.
Weight is the other key measure. Newborns typically lose 7 to 10 percent of their birth weight in the first few days. This is normal and happens because babies shed extra fluid they carried from the womb. A healthy full-term baby regains their birth weight within 7 to 10 days. Your pediatrician will check weight at the first visit, usually within a few days of leaving the hospital, to make sure this pattern is on track.
Signs that feeding may not be going well include fewer than 6 wet diapers a day after the first week, a baby who is difficult to wake for feedings, or weight that hasn’t started trending back up by the end of week one. These are worth bringing up at your baby’s next check-up or sooner if you’re concerned.
Feeding on Demand vs. on a Schedule
At one week old, feeding on demand (following your baby’s hunger cues) is more effective than trying to stick to a rigid schedule. Babies this age don’t eat consistent amounts at every feeding. One session might be a quick snack of half an ounce, and the next might be a full 2-ounce meal. This is normal. Over a 24-hour period, the totals tend to balance out. Trying to force a schedule can lead to underfeeding during growth spurts or overriding the natural hunger and fullness signals your baby is still learning to communicate.
If you’re formula feeding, you may be tempted to encourage your baby to finish every bottle. Instead, watch for those fullness cues, like turning away or relaxing their hands. A baby who consistently leaves half an ounce in the bottle is telling you their stomach is full, and that’s a healthy signal to respect.