I was at inpatient rehab for 2 months and by the end of it my feet and hands were noticeably better and I could walk without feeling agony, so it did take some time; it wasn't like flipping a switch and all was well, more like a steady progression but I felt so much improved (not just from the neuropathy) that I was very happy. I thought I had totally ruined my hands but as with so much else in recovery things got much better. Everyone is different but I guarantee that with sobriety one's mental and physical health improves dramatically.