I had symptoms of Crohns about 30 years ago. A doctor wanted to schedule me to talk to a surgeon to discuss removing my lower intestines. This was well into the discovery process. Instead, I gave up sodas, coffee and completely changed my high grease diet. The symptoms never completely went away but everything works. Of course, I’m sure everything is a matter of degree. I was probably on the edge where a significant diet change made a difference. But I’d try that first. And, no cheating...ever.
I’m following Eat to live aka fat-free vegan, and so my daughter who is home with us again basically is stuck eating my super healthy diet. On occasion she does eat other things outside the house, but no dairy and minimal meat.