my baby pees alot almost 14-15 times a day, always stay hungry. please advise

A. Babies need to feed often because they have teeny tiny stomachs. A 4- to 5-week-old baby can only hold about 3 to 4 ounces of milk at a time. This is why babies are ravenous again only a little while after feeding. As babies grow, their stomachs also grow, enabling them to handle more milk.