Breastfeeding.. How to know if baby is getting enough

Elizabeth

So I am exclusively Breastfeeding. My son will be 1 month tomorrow and I'm not sure if he's getting enough to eat. He sleeps 2 to 3 hours at a time but doesn't always eat when he wakes up. Not because I dont try he just isn't interested. He latches great and I Havent had many problems, just not sure if he's getting enough. Id say average he eats 10-20 minutes about 7 or 8 times a day sometimes 9 or 10.

When I pump he eats about 2.5 to 3 oz but there's no way for me to tell otherwise.

Thanks in advance. Im just a worried FTM. Im sure when I see he's gained weight at his Dr apt it will be ok.