If the damage has been limited to peripheral neuropathy (not the central nervous system), it is not surprising that repairs would be made within a year. Even less if the damage was less, and in some of those cases it is a nice direct road to fewer and less severe symptoms.

It is the central nervous system that often takes such a long and convoluted repair route.

And no one should "wait patiently." There can always be another problem, and one should alert to all possibilities, but one should not be alarmed unnecessarily or think that the process is not long and weird when damage is severe and especially when long-standing.