I second that. I've had peripheral neuropathy, and it took months to regenerate the nerve in my foot.
It sounds like you're not comfortable with your doctor, if I were you I'd definitely seek a second opinion. That way you can find a doctor that can help you best.
:)
having same exact issue but with foot, figuring out on my own that ifthe nerve signal is weak, muscles atrophy, sooooo all you can do is force exercise on it and as the nerve slowwwwllllllyyyyyy regenerates, the muscle will need less forcing to stay strong, nerve problems take many months to years to heal