Is my NB eating over excessively??

Tyeisha

I bottle feed breast milk to my NB and i try to give her 3 oz. If i give her anything less she’ll cry some more but if i give her the entire thing she’ll spit up about 30% of it. I know spitting up means she’s healthy and it’s normal but it seems like it’s every feeding and idk if she’s over eating. This happening to anyone else??