2 week old is NEVER satisfied...I feel horrible.

Started out letting her eat as much as she wAnted at every feeding, this resulted in her making herself sick off it and throwing up. Alright, so I decided to pump so I can see how much she's eating, eats 3oz and sometimes woul want more. Also would sometimes want to feed ever half hour. I waited and suffered with her until her 2 week appointment hoping the pediatrition would have advice, to my dismay all she said was I must be stealing her supply from her when I pump (ignoring the fact she eats what I pump I don't save it up and ignoring the fact she had a unsatisfied eating habit before I started the pump) so I decried to decrease her amounts to 2.5oz per feeding (I got a cold 3 days ago so she now exclusively drinks pumped milk that way someone else can feed her and I can keep my distance and keep her healthy) anyways she is definitely NOT satisfied with the 2.5oz every 2 hours. That was the goal because I didn't want her to eat too much. It seems like she just does not know her stopping point but I feel awed up how upset she is lately, I just want a happy baby who can eat without over eating. What amount do you think I should be putting in the bottles? When I pump (now that she doesn't nurse at all) I get about 4oz total each time, sometimes slightly less but ideally averages to about that much. She was 6lb 1oz at birth and 6lb 13oz at her 2 week appointment if that helps with determing how much to feed her. I just feel so bad because it's my fault she's not happy at her Feedings I don't give her enough but I don't know how much that is, and apparently she doesn't either. What are your thoughts on the amount?