11 day old

Vanessa

Hello everyone! I have an 11 day old. She usually drinks 2 oz every 3 hours but then she started wanting more so now she drinks 3 oz. Buuut, the last 2 nights she keeps crying and acting like shes still hungry. So I gave her an extra oz making it 4 oz!! And now tonight the 4 oz don't satisfy her, she still wants more!! I don't want to over feed her! Idk what to do?! Please help!! Fyi, she is on formula.