A 2-week-old baby typically drinks 2 to 3 ounces of formula per feeding, every 3 to 4 hours. That works out to roughly 8 to 12 feedings and about 16 to 24 total ounces over a full day, though every baby is a little different. The key is following your baby’s hunger cues rather than sticking rigidly to a number.
How Much Per Feeding
In the very first days of life, most newborns start with just 1 to 2 ounces per bottle. By two weeks, most babies have worked up to 2 to 3 ounces at a time. This makes sense when you consider stomach size: at around 10 days old, a baby’s stomach is roughly the size of a ping-pong ball, holding about 2 ounces. By two weeks, it’s slightly larger but still tiny compared to what many new parents expect.
Because that stomach is so small, your baby needs to eat frequently. Most 2-week-olds take a bottle every 3 to 4 hours, including overnight. Some babies cluster their feedings closer together during parts of the day and then go a slightly longer stretch at night, but don’t expect long sleeping gaps yet. If your baby is still eating every 2 to 3 hours, that’s normal too, especially for smaller newborns or those still catching up to their birth weight.
A Simple Way to Estimate Daily Intake
A commonly used guideline is 2.5 ounces of formula per pound of body weight per day. So if your 2-week-old weighs about 8 pounds, you’d expect somewhere around 20 ounces total in 24 hours, split across however many feedings they want. This is a rough estimate, not a strict target. Some days your baby will eat a bit more, other days a bit less. What matters is the overall trend, not any single feeding.
If your baby consistently drains every bottle and still seems hungry, it’s fine to offer an extra half ounce or ounce. If they leave some formula behind, don’t push them to finish. Babies are better at regulating their own intake than we give them credit for.
How to Read Your Baby’s Hunger Cues
A 2-week-old can’t tell you they’re hungry with words, but they’re communicating constantly. Early hunger signs include rooting (turning their head toward anything that touches their cheek or mouth), bringing their fists to their mouth, and making sucking motions or noises. These cues mean it’s time to offer a bottle.
Crying is actually a late hunger signal. If your baby is already crying hard, they may need a moment to calm down before they can latch onto the bottle and eat comfortably. Watching for those earlier, quieter cues makes feedings smoother for both of you.
Fullness cues are just as important. When your baby slows their sucking, turns away from the bottle, relaxes their hands, or falls asleep, they’re done. Resist the urge to jiggle the bottle or coax them into finishing the last half ounce.
Signs Your Baby Is Getting Enough
The best real-time indicator that your baby is eating well is diaper output. After the first five days of life, you should see at least six wet diapers in a 24-hour period. Bowel movements vary more from baby to baby, but most formula-fed newborns poop at least once a day, and the stool is typically soft and yellowish-tan or greenish.
Weight gain is the other major marker, and your pediatrician will track this at checkups. Most newborns lose a small amount of weight in the first few days after birth and then regain it by about 10 to 14 days old. After that, steady weight gain of roughly 5 to 7 ounces per week is typical for the first few months. If your baby is producing enough wet diapers, gaining weight, and seems content between feedings, they’re getting what they need.
Spitting Up and Overfeeding
Some spit-up is completely normal at this age. The muscle at the top of your baby’s stomach isn’t fully developed yet, so when the stomach gets full, a little formula can flow back up. It looks dramatic on your shirt, but babies typically only spit up one or two mouthfuls at a time, even when the stain suggests otherwise.
If your baby spits up frequently, try smaller, more frequent feedings rather than larger bottles spaced further apart. Keeping your baby upright for 15 to 20 minutes after eating and burping them midway through the bottle can help too. Occasional spit-up that dribbles out easily is different from vomiting, which comes out forcefully. Watch for warning signs like spitting up green or yellow fluid, blood in the spit-up or stool, refusing to eat, having fewer wet diapers than usual, or not gaining weight. Those warrant a call to your pediatrician.
What Changes Over the Coming Weeks
Your baby’s appetite will increase steadily. By one month, most babies take 3 to 4 ounces per feeding. By two months, 4 to 5 ounces is common. The spacing between feedings also stretches out as your baby’s stomach grows, so you’ll gradually move from feeding every 3 hours to every 3.5 or 4 hours. The total number of daily feedings drops even as the volume per feeding goes up, so the overall daily intake rises at a manageable pace.
Don’t try to rush this progression. Let your baby set the pace. If they’re happier with smaller, more frequent bottles right now, that’s perfectly fine. The goal at two weeks old is simple: feed your baby when they’re hungry, stop when they’re full, and trust that their appetite will guide you.