I noted a couple of questions here that have not been addressed, so here is my experience:
'They' say, it takes as long to recover from Lupron/Eligard etc as you were on it. That means that if you were on it for a year, it takes a year to recover after that last dose wears off - as much as you are going to as there are often permanent 'side effects'. My personal experience is that after 2 & 1/2 years of that, the 'side effects' are still with me 2 & 1/2 years after it supposedly wore off.
The radiation side effects increased for 3 years after I got my 80 Gy and peaked Oct - Dec 2016 - radiation colitis, cramps, much increased bleeding from hemorrhoids and major changes in bowel habit. I am told by other survivors that these will gradually fade over the years. 5 years after RT and the side effects are still part of my daily life. 1 testicle did not recover from luprolide chemo, which is sorta good news as my cancer remains hormonally sensitive, sorta bad news as I have little interest in sex any more. Drumroll until I get injected again, blood test in 2 weeks.
My advice remains the same: eat right, get lots of exercise and rest. My plan is to start a reduced calorie and increased exercise routine when I go back on Eligard. I remain, as always, on a reduced calorie and serious exercise daily routine.