Hi Kris, welcome to Living with Polyneuropathy. Gosh, it sounds like you have accomplished so much in the face of adversity. You are an inspiration 
I don’t know much about MS, but I do know fatigue plagues most of our members with CIPD. I did a quick search on fatigue and came up with this old thread, maybe there are some helpful ideas here.
Keep us in the loop and let us know what works for you 
CG