The following link explains the autoimmune protocol diet.
https://www.healthline.com/nutrition/aip-diet-autoimmune-protocol-diet
I do think diet is important but it adds another element to an already complicated situation. Most of my pain happened for no reason at all. My pain was more like voodoo and dark magic if you ask me.

My immune system is just deranged. Fortunately, my doctors believe me and help me as much as they can. I don't completely understand the various inflammation pathways. The medication I currently take seems to stop my inflammation.

I had a recent rheumatology visit that became a "teaching session" for a medical student, resident doctor and a fellow. I asked the staff rheumatologist how he knew so much about me. To my surprise, he informed me that he had the same autoimmune condition that I have ---reactive arthritis and uveitis. The staff doctor wasn't old enough yet to have PMR.