Newborns: At least once or twice a day. Some may have a bowel movement after every feeding. One or two months: At least once a day, sometimes every other day.
Starting with your infant's second day and throughout the next few days, it will be important to aim to nurse 8 to 12 times (or even more) in 24 hours – both.
As a very rough guide, your baby should feed at least 8 to 12 times, or more, every 24 hours during the first few weeks. It's fine to feed your baby whenever.
The American Academy of Pediatrics (AAP) explains that after the first few days, your formula-fed newborn will drink around 2 to 3 ounces (60 to 90 milliliters).