Formula feeders advice?

Sadie

My baby is currently eating Similac Neosure. She’s been on it since birth. She was born at 34 weeks, so this formula was given to help her gain weight. Was working great, weren’t having any issues. The past few days she’s been puking up what she eats at least once a day. And I mean puking. It’s really the most awful thing for everyone involved. So I guess my question is, have any of your babies been fed this? How long did you feed it to them? If you changed, what did you try/what worked?

Open to opinions🤷🏻‍♀️