Question about spit up

Rachael

My little girl is 4 months and all of the sudden has been spitting up more than usual. She was on nutrimigen when it started. I called her peds and they suggested to just switch her back to a different formula and see if it’s helps. We switched her back to what we had her own previously which is Gerber Soothe. She’s don’t great with it however recently for about 2 days she’s started to spit up again. Her weight gain is good (gained 2.5lbs in 1.5 weeks) and she’s now eating for a supported sitter. Thought it could’ve been the squash but she hasn’t had it in a day in a half. I’m wondering if I need to contact her peds again or wait until we’re don’t this this formula and then switch to one that’s directed towards spit up.

UP FOR ANY SUGGESTIONS!