Thanks for the suggestion. I've tried various diets, including Keto, LCHF, etc. I try to stick with LCHF just to slow down my weight gain, but it doesn't impact my pain or neurological symptoms.

For anybody else reading this I'm a similar situation, please do follow cableshaft's advice and try new diets. I also recommend physical therapy.

The cause(s) of MS and many similar diseases are not well understood. At all. FWIW, I lived a pretty healthy lifestyle before my symptoms started.