Hey there!
I’m so sorry you’re new and struggling..trust me, I get it. I think you might be on the right track with the porridge/oatmeal? When I first got diagnosed 9 years ago, I could NOT eat oatmeal. Not even gluten free, rolled oats, any kind of oatmeal. It would make me grumpy, tired, kind of zombie like, etc. it would also really back me ...