My 8 week old son slept from 7:00-1:30 A.M. (I changed his diaper at 10:00 PM and he didnt even wake up) then had 5 oz of milk then went to sleep from 2:15-5:00 A.M. then I pumped and fed him again then he went back to sleep from 5:45-9:30 and fed again and now has been asleep from 10-12 and he hasn’t woken up at all except to eat.. he’s sleeping through diaper changes and every time I try to hold him and talk to him or keep him awake he just sleeps like a rock in my arms... is there such thing as too much sleep? Should I be worried?