🚨Question🚨

My son had an appointment yesterday with the GI to make sure everything was OK with his Acid Reflux (I was yayyyy!)

but I ended up asking him is my son (3 months old) suppose to still waking up every 3 hours to feed....even at night. He said no, then he ask me how much I was feeding him I said 3oz...he asked me why so little. i told him the DUMB ASS ER NURSE told me when i was feeding him 4oz it was too much...he kindly informed me that he is suppose to b drink around 5-6 ounces (poor baby I been starving him 😭) so yesterday on our way home he started crying because he was hungry I gave him 2 oz on the go and another 3 when we got home ( about 30 mind after the 2oz) he slept for 4 hours. His next bottle we gave him 5 oz, he sleep for 6 hrs basically thru the night. Now today during the day I still been given him the 5oz but he still been waking up every 3 hours. I was wondering am I still suppose to feed him every 3? I haven't.... I been letting him cry it out til he falls asleep about an hour and feed him again at the 4th hour ...because I don't want to over feed him. Is he waking up and crying because he's actually hungry ( he's not chewing his hands).... or because he's so use to the every 3 hours?!?! His doctor said give him the 5 and eventually space out his feeding, but am I suppose to space it out for him or let him do it on his own? ( mind you I have the type of baby that's I'll eat as long as you keep feeding him he doesn't care if he's full or not)