Thanks for the quick reply!
We're heading to the docs tomorrow morning as the eczema and mucousy poops have gotten worse the last few days. Taken some pictures of them to show her, but she's a great GP. Wondering if I should push for a stool sample test to be done to check for any bugs or blood in there.
My son was not this bad, he was always unsettled and never slept, and the only thing which tipped us off about his intolerance/allergy was that he became anaemic. He's almost 3 and still can't handle dairy, so is still on his prescription formula. He also had a phase of not handling eggs well, so wondering if they could be another culprit for my daughter.
Luckily Australian food labelling is pretty good so all allergens are highlighted in the ingredients list, plus I had to do it with my son a couple of years ago. It's so naughty how they sneak it into such inconspicuous foods!