Feeding amount and schedule for a 4 months old baby.

Ilang oz po ba ung minimim na dapat nate-take ni baby ngaung 4mos old na sya? And every after what time po ba? Like, should i wake him up at night pra padedehin or hayaan ko lng sya matulog at hintayin ko nlng na magising or umiyak at maghanap ng gatas? Thanks! #firsttime_mommy #4MonthsOld