This is not my topic, and I really should mind my own business, but I think a misapprehension is at work here. From what I have read, and it is fairly comprehensive, nerve regeneration is an unusual outcome for most peripheral neuropathies. It seems most likely where the cause is a toxin, like alcohol or certain antibiotics, and the causative agent is removed, or in cases of nerve compression. I do not see any convincing evidence for anything beyond eliminating sugars and alcohol as affecting it.
Please forgive me if I am wrong, but Marie, you seem to be punishing yourself in pursuit of an elusive and perhaps impossible goal. It is highly unlikely that a diet as healthy as yours needs to be "improved". You are already eating healthier than the vast majority of people. I cannot see any justification for restricting yourself to a boring, repetitive diet.
It is very tempting to believe that all health outcomes are in our hands, and that we can always cure ourselves. The sinister side of that belief is the self-blame which accompanies a failure to heal. With this disease that is the most likely outcome, and so guilt which is misplaced and counter productive to enjoying the life we have, with its limitations, results.
I am not advocating giving up, but a realistic acceptance of that which may be beyond our control. Many of us have very limited and painful lives. To unnecessarily eliminate the pleasures of enjoyable, healthful, and varied meals seems cruel.