Sorry. But a big part of my problems has come from doctors treating me as if my neuropathy was from diabetic. That and then not bothering to look for the non diabetic cause.
You might try alpha lipoic acid supplements, available without prescription. It's hard to say this would help, however there is some literature suggesting it will help with diabetic neuropathy.
14 years for me. but now I have damaged nerves and no pain. Rolfing has solved my muscle problems. Using my putter as a cane I play 4 rounds of golf each week.
I suspect alternative medicine of some sort is going to be the most help to you. Perhaps an OD, chiropractor, acupuncturist, or herbalist. I have a damaged nerve in my leg and I am just thrilled that I found the cause so that the electric shocks could be stopped. I am sure the feeling will never be normal since I had it for 15 years.