Recovery can continue beyond 36 months.
The thing with "recovery" is that it can, if you are one of the fortunate ones, slowly creep up on you without you realising that progress is being made. Then, one day you notice and realise that things are better. Better than they were 6 month ago. And better than they ever post op?
It is such a lottery, sadly.
Factors that may influence or affect your recovery are the luck in the attempt at nerve sparing surgery, the luck in general damage to the area, the exercise that you engage in after surgery, your attitude, your partners attitude, whether or not you have a pump or access to a pump or similar, and medication that you get AND when you get it.
One thing is for sure, or may be for sure, if you do not give yourself the best chance of recovery, IE Do all YOU can, you will not recover to your fullest potential.