Welcome!
I do not personally follow any special diet, right now I eat what I can tolerate. The unfortunate thing about Crohn's is that the foods people can tolerate vary wildly. Some Crohnie's can eat vegs or fruit, I can't tolerate them right now even cooked, except for bananas. A soft food diet can be helpful if you are suffering from inflammation.
I know that there are a lot of people on this forum who are doing special diets either on their own, or through their GI. My GI has never said anything about diet, which I think is a little irresponsible of him, but I am limited to a few docs in a small area.
If there are foods that you can eat that don't cause pain, (or too much pain), start with those and gradually add things. If you do it this way, you can generally tell what it is that is upsetting your gut. I've gotten to the point now where I can just look at something and my tum goes "no way!"
If you can't get anywhere with your GI, you could try a dietician or nutritionist. My insurance won't cover these but some have access to them. Good luck!