As has been said it takes a long time for the HT to fully disappear leading to the 'new normal'. I was on Zoladex for 3 yrs plus 2yrs abiraterone, enzalutimide,prednisolone on trial. Its been said it can take as long as you were on the stuff to recover and, for me, I thinknthat was about right. Obviously, the effects gradually eased, testosterone returned to a good level etc. I can't remember exact timings, I didnt keep notes as some do, but I do remember the libido returning without warning sort of thing, no gradual improvement but one day it was back to normal, desire wise.
Peter