I have had a long diagnosis of IBS before being diagnosed with crohns. You can drive yourself crazy chasing spurious diet/symptoms corolations. Alot of people drive themselves into disordered eating habits trying to control symptoms with diet. Ultimately your mental state has more to do with how you feel then any specific dietary input taken with moderation. Most people with autoimmune diseases also have high amounts of anxiety and stress. If you put more focus on the mental component, you'll likely find more symptom relief.