My baby won’t eat.

Ok dudes I need help… Braxton (2wks old) will not eat of a night and sometimes he will hardly eat of a day , he’s taken 2oz since 9pm and its 5am … I just tried feeding him and he ate 1oz and fell back asleep, it’s like he won’t stay awake long enough to eat. I’ve tried everything, taking his clothes off, taking diaper off too, taking a wet wipe and wiping down legs and abdomin, dude physically just will not stay awake long enough to eat and I’m afraid I’m gonna dehydrate my kid and his pediatrician is out of the office.