Transition from formula to Breastfeed

Hello,

My baby is 2 weeks old now and I’m trying to slowly transition him to breastfeeding from formula. He is so used to the formula nipple that he was finding had to latch onto my breasts.

From past couple of days I have been trying to nurse him and he latched for about 40 minutes. But he is always hungry for more milk whenever he drinks from me.

Also when I pump milk, about 10 mins each side, I can get just a little over 1 ounce. Is this normal? Any suggestions on increasing milk supply?