Can Neuropathy be cured?

No. Our nerves are wrapped in an insulating fat called MYELIN. The older we get, the less myelin we make. Myelin is made from cobalamin in our diet. That's B12.
Elders eat less B12 rich food, meat and fish. Our stomachs hold less acid which removes B12 from food molecules. Then there's alcohol. It numbs the 20 ft long intestine reducing absorption. I fixed my trygeminal neuralgia by implementing above. Mussels have 10 times as much B12 as red meat. Most people don't eat them. Therefore one needs a daily supplement. Go for it and feel your nerve pain slowly go away. James.

@jamessaxo May I ask, how many mcg of B12 do you take? I recently bought the Nature Made B-12, Extra Strength 2500 mcg. Wondering if that's too much.

This is just my take. Will it be cured. Yes. At a date TBD. First breakthrough will be pain management treatment mitigating pain. Then stopping the spread. Finally reversing PN. But hey, I'm 76 yo and I was told as a 30 year old by an ENT specialist that I would not live to see damaged left auditory nerve being repaired. Like my PN, I've learned to thank medical science for amazing advances that have got me this far and then live with the rest. And thanks also to forums like this!