Great advice was given as usual from Mrs. D. Great you are losing weight. I hope you can get your tests and I agree, get quality Omega 3 for myelin, add Benfotiamne and B12. There are other great supplements also including antioxidents that are needed by the nerves.
Recovery can take a while, great you are here. SO much good advice.
I know you said you have a good diet and are not diabetic, but I have had wonderful results with lowering sugar to almost nothing and the same with simple carbs like rice, pasta, bread, potatoes..
My blood sugar is great, but our nerves do not like spikes and lows. Keeping glucose level is very important. I even take mine at home so I know how just a few potatoes, rice etc can make the level high.
There is a book called "Minding my Mitochondria" that talks about nerves, mitochondria and diet. Great book.
I eat no gluten also. There are so many things we can do to feel better and I hope you will very soon!