R-Lipoic acid, B supplements for Small Nerve Neuropathy (?)

Many reading suggests that R-Lipoic acid may help small fiber neuropathy because it lowers blood sugar levels. That, in-turn, would help those with diabetic small fiber neuropathy.

However, for those with normal blood sugar levels AND idiopathic small fiber neuropathy, is it still helpful in both treating the burning and painful pins and needles, tingling , etc and also rebuilding the small unmyelenated nerve fibers?
I started taking RLA 50mgs, (100 made me jittery) about 2 weeks ago. I was taking metanx but my doctor ran out of samples. I supplement now with my own "formula" ( thanks to MrsD and others Ive met on here!) They are: Methylfolate 800mcg, Methylcobalamin 2000mg (have normal b12 lab result 1250) P5P 50mgs, Benfotiamine 160 2xday, Vit C 500mgs, Chelated Magnesium 200mg, Vit D3 2000mgs, Fish oil.
Its been approx 7 weeks since I started taking the "formula". It has helped with the burning somewhat, but I still have many other symptoms. I started taking B1 3 weeks ago. Does anyone believe these supplements could help for Small nerve idopathic N if I keep taking them? and How long should I wait to see if the are truly helping. confused and in pain..Thank you in advance.