2 week old.

How much is your 2 week old eating? My little girl will be 2 weeks old tomorrow and she eats like a maniac. I tried breastfeeding at first but she wouldn't latch. I saw 3 different lactation consultants and nothing worked so she is on formula now. She is eating at least 3 oz every feeding I try and have her eat every 2 hours during the day so we can get some sleep at night and have longer stretches but that doesn't seem to work. She eats and it takes almost 2 hours to get her back down she seems like she is still hungry but she will spit up sometimes. Do I give her more food or just wait out the fussiness until she falls asleep.