Decreased appetite after two month shots

Did anyone else's LO appetite decrease after their two month shots? My LO did vomit almost daily before her 2mo shot but pretty sure it was cause she was on the wrong size teat (didnt realise this cause change bottle brand). But noticed decreased appetite after her 2 month shots (prevenar13 & rotateq). she was previously drinking average of 29oz (850ml) and since the shot she’s only drinking an average of 22oz (650ml) daily.

It’s been a month now, and she’s still not drinking much. yesterday in her weight check she only gained 8.8ounces (250g) since last month. So stressed and upset cause yesterday LO got prescribed with reflux meds (motilin & ranitidine) because of her symptoms post 2 months shots - feeding refusal, low weight gain, & gagging/choking. :(