How many oz of BREASTMILK does your new born drink.???

My new born 1 week old (9 days to be exact. ) Drinks 4oz in 2hours I don't know if that's normal or he is eating to much .when he was first born he stayed 1 hour on my boob. Then another time 45mins. Since coming home He drunk 1.5oz. And since then has been drinking more every 2 days it seems. He could NEVER have enough of my boobs when I feed him directly from them for he falls asleep on them then wakes up 1min after to then eat again. I just wanted to know what your new born feedings look like to compare .