Is my baby really eating too much?

some babies have a big appetite! i know my neighbor was telling me her baby was eating 4 oz at birth and by two weeks he was eating 6! i let my son feed on demand as he knows when he is hungry or not! that is a big weight gain but maybe he had growth spurt! but in the end he is your son and you need to do what you think if best for him your his mommy you know best =)