Uhhhh. Morbus Crohn.

Ok, you say you are not good at cooking. If your metabolism can deal with eggs and flour and cheese, here may be a replacement which could help you. Especially since comfort food is very important:

Käsespätzle

You will non-self raising flour for that and a board with holes in it.

Something like this: https://www.amazon.com/Zoie-Chloe-Stainless-Spaetzle-Scraper/dp/B01A59GYNM/ref=sr_1_4?keywords=spaetzle&qid=1575064919&sr=8-4

You will have to make a simple dough. Flour and eggs and water. My grandma used equal shares of eggs and water. You make a mixture of eggy water and add flour to that until you get a viscosity which isn't runny. You put that board with holes on it above a pot with hot water(not steaming too much so not really boiling but quite hot) and push the dough through. The weird in-between of dumplngs and pasta is done when it floats. Get that out of the water with a spoon with holes in it and drop it into a pan with butter in it.

Add cheese(swiss, not cheddar unless the cheddar is very old).

My point is, nobody is incapable of cooking. If you burn cheese, then it is too hot. You simply can't be dependant on industrial food for your well-being.

If I managed to get the recipe off of my sexist granny who wouldn't pass it on to me due to overabundance of penis YOU are able to try to make it work.

Your dietary needs and the rest of the medical treatment are probably still up to trial&error. And a lot of that trial&error will be up to you. Because, holy fuck, the medical community seems to just have arrived at the conclusion that it is a real problem and nothing more.