How to know if baby is hungry or fussy? When do u feed your baby and how often? My mother wants me only to feed my baby (hes one month now but she always wanted this even when he was new) every three hours and believes he should be put on a schedule. Sometimes he's so fussy though and I feel like he is hungry...but she says if I feed him too much his tummy will be upset. He recently pulls off and gets upset at the end of feedings sometimes I dunno why....my let down is quite fast and he sometimes chokes and almost always spits up after eating....