frequent nursing

FTM here!!! Son is 5 days old and he nurses frequently, like maybe every 30 minutes give or take a few but only for 5, maybe 10 minutes at a time before he falls asleep. I burp him and try to switch breasts but sometime she’s just too sleepy to eat again until he wakes up and wants more right away or least soon after.

I’m worried he doesn’t get enough milk? I have to change his diaper almost every time he eats. He has a doctors appointment tomorrow so I’ll ask then but I’m just a little worried and wondering what you mommas think!