1 week old

My 1 week old doesn't wake up to eat all day but I don't know if that's because I don't wait for him to wake up & start crying, I get his milk ready every 2 1/2 hours before he gets a chance to wake up & feed him . Don't get me wrong he wakes up thru out the day & cries cus of dirty diapers & what else bothers him. So just wondering if it's normal .