Is it ok to go back to original milk after changing?

[BabyJ'sMummy]

I just changed my lo's milk to SMA Staydown because he has silent reflux which may have turned into reflux but he has just projectile vomited everywhere on it and seemed to almost choke on the last few sips. He has projectile vomited three times in the last 2 days, twice before I changed over milk but now I'm wondering if he may have a bug. Is it ok to change back to the milk he was on so quickly, he only had 3 feeds with the Staydown? xx

 

[bbyno1]

well my hv said you wont see the effects the new milk has on them until 7 days so if i could keep LO on one milk for 7days before changing again but thats just in general..i think if i was you id get him off it as it dont seem to be agreeing with him but maybe give your health visitor a call?X