my daughter has been on the same formula since about a month old recently I changed her from a premiee nipple size to a size 1 and a different bottle brand , in realizing that lately after she eats she pretty much throws it all back up. Can a new bottle do that? Does that mean she’s not ready for a bigger nipple size? When she drinks from a size 1 she’s doing fine it’s just after she finishes the bottle it all comes out when I burp her or even before I’m able to get her into position.

Thanks!