Have you started Budesonide? If not, my regiment was 2 Capsules of liquid Pepto Bismol every 6 hours and diet was essentially BRAT - Bananas. Rice, Applesauce and white toast. But I skipped the applesauce. That was based on old country learning that scraping the peel of an apple provides pectin - which helps with diarrhea. Applesauce isn’t the same and I thought worsened diarrhea.

So no whole wheat or fiber to speak of - just to calm things down. Then add simple foods back one at a time. Some do ok with yogurt.. some don’t. Everyone is different. I would have sold my soul for a salad. But you need treatment more than salad right now.

Good luck!!