Update!
Bad news is that after a few days back on dairy, her hiccups, acidy breath, coughing and tummy troubles were back, so we're now off dairy again for a couple of months at least.
The good news is that I took Ella for a weigh-in today and she's gained 225g in the last two weeks! Hooray! She's been seriously making up for lost time, and eating for longer and longer sessions (unfortunately a lot of them are at night). I've gone back to EBF because once again we'd have to use the icky Neocate if she wanted formula.
One thing I wonder though... we've been off dairy for over a week again now, and last time we saw improvements in that time. This time she is still having pretty much the same symptoms except for the acid breath. Now I wonder whether it hasn't been just a teething thing this whole time. She has at least one more tooth on its way now (and I strongly suspect it's a molar, even though that's unusually early) and the last time we went off dairy, it coincided with her first two teeth coming through.
Do any of you know whether teething can cause excessive farting? She is puffing away ALL the time at the moment. And PHEW are they stinkers!
![Tongue :P](https://smiley.babywhispererforums.com/Smileys/classic/tongue.gif)