B12 deficiency can make things worse and can be found with a simple blood test. On the flip side, I have had high B12 for ten years, double and triple the highest acceptable range even without supplementation. I recently learned this can occur if your ferritin is low because ferritin helps the B12 to be absorbed by your cells, so it isn't recycled in your bloodstream. B6 deficiency and toxicity are significant factors. I had mine checked for the first time, and it is double the highest acceptable value. I just now downloaded the Cronometer App to track my B6 intake. B6 has been a misunderstood supplement, and when deficient or in excess, it causes or exacerbates all kinds of neuropathies.

I just commented about B12 and B6. Have you cut out the nerve-aggravating foods from your diet? Gluten, dairy, alcohol, sugar, caffeine, brown rice? If I eat any of those, my symptoms get way worse. I can tolerate gluten if it has been fermented in authentic sourdough made with whole grains and brown rice if I sprout it for 48 hours before cooking. Fermentation and sprouting change the chemical compositions.