Welcome; haven't seen a W. gray in sometime!
I leave the med recommendations to the rehabbers here.
To lend support to this baby in addition to any meds recommended by the rehabbers; the bio-identical forms of Vitamin B-12 (Methylcobalamin and Adenocobalamin that have been found to improve nerve damage in rats and mice.
Using this exact source below from, "Virmegy", add
(1) needle droplet using a (1 ml needle syringe)
not the dropper the bottle comes with. Add the single needle droplet to formula.
https://www.amazon.com/Vimergy-USDA-...7429227&sr=8-5