Baby fighting me while bottle feeding.

Baby fussy while eating.

(Shes formula fed)

She kicks, knocks bottle out of my hand, tries to stand up, turns her head, and when she does calm down she wont latch on to the nipple. She lightly suckles on it, nibbles on it, and when formula comes out she gags. She also cries the second I pat on her back, when i stop to burp her.

This is every feeding now, before she ate 4 or 5 oz every feeding now its 1 or 2 oz. She eats every 3 to 4 hours.

I've tried gas drops and gripe water, in case its gas or air in her tummy.

I've changed her nipple flow from 1 to 2 in case it wasnt coming out fast enough.

I burp her frequently through out feed and she always burps multiple time.

What else can i do to get her to stop fighting me because im nervous shes not getting enough to eat.