Hi Mina, worth giving IF a try as it may reduce your requirements for your anti inflammatory medication, although the coeliac s will remain. As a GP i have not come across research looking at IF in people with coeliacs where sticking to a gluten free diet is, as you know, very important.
Good luck and I hope this diet works for you.

Hi Mina, don’t get me started on steroids! I, too, was on the beastly things for two and a half years. They were prescribed in January 2010 for polymyalgia rheumatica, which admittedly a 20mg dose cured in a matter of days. The doc, however, insisted I stay on the meds in ever-decreasing doses until mid 2012. Steroids can mess up your immune system. Not only did I have a horrible pudding face (at a time when I was signing up for a part-time university course which means I still have some truly awful ID photos on various cards)and a revoltingly flabby body, I also had to deal with shingles and the subsequent postherpetic neuralgia, which was even worse.
When I finally came off the steroid meds, with little or no effort I slowly but surely lost 3-4 kilos, way before I started on the Fast Diet, on whch I haven’t lost a whole lot more weight, but have lost inches and reduced cholesterol and BP, the latter quite dramatically.
I hope 5:2 will work for you. The weight may only creep off, but all sorts of other good things may well happen. The very best of luck!