When is it okay to stop waking your baby for feedings?

Ella

My baby is 2 weeks old so i know its still too early but just wondering when, he drinks 4oz every 2-3 hours, yes its alot but pediatrician says its fine as he's not spitting it up, my daughter was the same when she was born. His birth weight was 8lbs 8oz but had trouble gaining it back due to diarrhea from formula sensitivity, ive changed it once he was 6 days old and he stopped and doctors had me start feeding him every 1 and a half to 2 hours.

Back to every 2-3 hours eating and is 9lbs 14oz so doctor was super happy. I can't remember when i started letting my daughter sleep without waking her for feedings. I feel like it was at a month old but i cant remember.

Hes formula fed btw.