vibes for you friend man.
My sister has had crohns for almost 10 years now. I was really rough for her at first and she had a few surgeries but it seems pretty under control now. I would highly suggest finding someone as close as possible who is in it for the long haul because from my experience you need a crohns doctor who is always there and to go to periodically for check ups.
Basically stay away from things that irritate the digestive system. Spicy foods, foods that are difficult to digest, raw vegetables and fruits I think.
Foods that are hard to digest are big. Seeds, corn, basically anything that you can see in your shit still that your body didnt break down, to put it crudely. These are things that just irritate the hell out of the track and will lead to flare ups. I'll talk to my sister and check back after I ask what she would eat when she was just starting and had flare ups.