Well Damn, That's a shame to hear. I do get where you're coming from as I suffer from Primary progressive MS and lots of neurological deterioration. If I had not been lucky enough to get an amazing neurologist I would have been stuck.

I can offer some Ideas on what helped Me, I made a Post about some of It a long while back.

I Micro dose Cannabis.
@rubido/microdosing-or-using-up-the-little-bits

I can also say that having Lots of Whole oats (Oatmeal with almond Milk or coconut milk is delicious!) and dill to your diet are a great way to nourish your nervous system, not a cure but it helps.

I also have found Turmeric and Saffron To be helpful in High Concentration. I add a spoon of Turmeric To Gunpowder or Buckwheat Tea (sounds fuckin weird but tastes pretty good) and take a Saffron supplement, due to cost of saffron.

So between those it might be worth a shot. I have found they have helped me a lot and none of them are reactive to standard treatments.

I also have a set of exercises I do for about 15 minutes a day That The neurologist said would help me create new neurological pathways if your interested. Draw a Circle Multiple times with My Off hand, Count aloud backwards using only even or odd numbers, etc. Essentially my understanding of the science behind it is Just do an activity that isn't usual, and repeat it for 5 minutes. Your Brain will force itself to try and make new connections.

Anyway enough of my stuff, I hope some of this helps.

Sending Courage and Strength to the Tyger