10 month not wanting formula

Hi, I thought this was a phase but several days have passed and I’m getting concerned. My daughters docs aren’t concerned about this, but as a monther Im starting to really freak out. My daughter refuses to drink her formula unless she is really hungry. She will drink it after she wakes up and during the day. I’m constantly begging her to drink some milk most of the time during the day and night..

Do babies get sick of formula over time? Is there anyway to switch it up ( we have tried so many different formulas over the months we finally found one that didn’t give her allergies) im out of options.. please help!!

I’m concerned she’s loosing weight..