I'm having issues with weaning 16 month old onto whole milk. As soon as we put her on it she has been horrible bowel movements and gas. We kept her on it to see if she just had to get used to it. A few days ago we ran out and just gave her semi skimmed which we could use till we could buy more. She hasn't had any tummy issues since using it. Is it bad if we switch her onto semi skimmed milk. She is in the 96th percentile so isn't tiny. Or should we just go back to formula. Her tummy was never terrible on formula but never was completely okay. I would talk to her gp but due to covid if its not an emergency they don't want to know.