I breastfeed her for the first month, so I don't really know how much she ate... but I know she ate a lot so that's why I introduced formula too
Brandon, my nephew, was drinking around 3-4 ounces by the time he was 2 weeks, I believe... somewhere around there, anyway!
I think from what you said that its completely normal! I gave up on pumping after only a few tries cause I didn't get much from it, and wasn't very patient lol