Hey sweetie,
I was speaking to a lady the other day who has a 4 year old with severe reflux STILL, the poor things! Anyway I mentioned that I suspect our LO has an issue with yogurt but not other forms of dairy, and her son has real issues with "cold dairy" like yogurt, icecream etc...but NOT milk...strange isn't it?? She thinks it's got a lot to do with the preservatives they use...might be something to keep an eye on anyway!
I hope your dairy reintroduction is going really well
xxLizzie