So as of today your baby corrected gestational age is 40+2 weeks which means she is term. You haven’t mentioned her birth weight and what her current weight is. I can’t comment without knowing how well your baby is gaining weight. Have you tried direct breast feeding also? You may feed your baby every 2-3hours at this point but then the volume would change. It is possible your baby has some amount of reflux which is why she is vomiting. Kindly connect with a pediatrician with her discharge details from hospitals so you can be guided as to how to go about with the feeding.