A 2-week-old baby typically drinks 2 to 3 ounces of formula per feeding, eating 8 to 12 times over 24 hours. That works out to roughly 16 to 24 ounces total per day, though every baby is a little different. The simplest way to dial in the right amount for your baby is a weight-based calculation: about 2.5 ounces of formula per day for every pound of body weight. So a baby weighing 8 pounds would need around 20 ounces spread across the day’s feedings.
Why Feedings Are Small and Frequent
At two weeks old, your baby’s stomach is roughly the size of a large egg. It holds about 2 to 2.75 ounces at a time. That’s why newborns eat so often: they physically can’t take in very much at once. Stomach capacity grows slowly from here, not reaching about 4 ounces per feeding until three or four months of age.
Because of this small stomach, you’ll likely be feeding every 2 to 3 hours around the clock. Over the coming weeks, the gaps between feedings gradually stretch to every 3 to 4 hours as your baby can handle larger volumes.
The Weight-Based Formula
The American Academy of Pediatrics recommends that formula-fed babies take in about 2.5 ounces per pound of body weight per day. Here’s what that looks like in practice:
- 7-pound baby: roughly 17.5 ounces per day
- 8-pound baby: roughly 20 ounces per day
- 9-pound baby: roughly 22.5 ounces per day
- 10-pound baby: roughly 25 ounces per day
Divide that daily total by 8 to 12 feedings, and you get each bottle’s target. For an 8-pound baby, that’s about 2 to 2.5 ounces per feeding if eating 8 to 10 times a day. These are averages. Some feedings your baby will drain the bottle, others they’ll stop halfway through. What matters is the overall daily intake, not any single bottle.
The 2-Week Growth Spurt
Right around 2 to 3 weeks, most babies hit their first major growth spurt. Your baby may suddenly seem hungry all the time, fuss more than usual, and want to eat more frequently. This is normal and typically lasts only a few days. During a growth spurt, offer slightly more formula at each feeding or feed more often. Your baby will settle back into a more predictable pattern once the spurt passes.
How to Tell If Your Baby Is Hungry or Full
Crying is actually a late sign of hunger. If you wait until your baby is crying, they may be too worked up to feed well. Earlier hunger cues to watch for include putting hands to their mouth, turning their head toward the bottle, smacking or licking their lips, and clenching their fists.
Fullness looks different. A satisfied baby will close their mouth, turn their head away from the bottle, and relax their hands. If you notice these signs, stop the feeding. Your baby does not need to finish every bottle. Letting them decide when they’re done is the best way to prevent overfeeding.
Paced Bottle Feeding
Newborns can’t easily control the flow from a bottle the way they can at the breast. Paced feeding is a simple technique that gives your baby more control and helps prevent them from gulping down too much too fast. Use a slow-flow nipple and hold your baby in a nearly upright position, supporting their head. Hold the bottle horizontal, not tilted up, so the nipple is only half full of milk.
Let your baby latch on their own rather than pushing the nipple in. Watch for natural pauses in sucking. If you notice gulping, wide eyes, splayed fingers, or milk dripping from the corners of their mouth, lower the bottle so the nipple empties while staying in their mouth. Once they start sucking again, bring the bottle back to horizontal. A feeding should take about 15 to 30 minutes. If your baby slows down, pushes away, or falls asleep, the feeding is over.
Signs of Overfeeding
It is possible to overfeed a formula-fed newborn, especially because milk flows more freely from a bottle. An overfed baby can’t properly digest the extra formula, which leads to discomfort, gas, excessive spit-up, and loose stools. They may also swallow more air trying to keep up with the flow, which makes belly discomfort worse and causes more crying.
If your baby consistently seems uncomfortable after feedings, is spitting up large amounts, or is gaining weight much faster than expected, you may be offering more than they need. Watching for fullness cues and using paced feeding will usually solve the problem. Healthy weight gain for a newborn is roughly 5 to 7 ounces per week after regaining their birth weight, which most babies do by about 10 to 14 days old.
A Typical Day at 2 Weeks
For a baby weighing around 8 pounds, a realistic day might look like this: 8 to 10 bottles of 2 to 2.5 ounces each, spaced about 2 to 3 hours apart, including overnight. Some babies cluster their feedings closer together in the evening and sleep a slightly longer stretch at night. Others space feedings more evenly. Both patterns are normal at this age.
You’ll know your baby is getting enough if they have at least 6 wet diapers a day, are steadily gaining weight at checkups, and seem content between feedings. If they’re consistently draining every bottle and still showing hunger signs, it’s fine to start offering an extra half ounce and see how they respond.