Pelvic floor exercises for RT??? Nobody ever suggested them to me, and (to my mind) they’re unnecessary for RT.
HT has far more side-effects than RT, but they vary dramatically from person to person. Loss of libido is almost universal. Other common ones are hot flushes, mood swings, and fatigue. I felt as if my head was full of cotton wool my first couple of months on HT, but that went away again.
RT side effects are cumulative, and there’ll probably be no significant ones for the first few weeks of treatment. After that, the radiation may irritate the bladder, resulting in the need to pee frequently. I bought a plastic urine bottle (Amazon) so I didn’t have to get up a dozen times a night. Helped a lot. Radiation makes the prostate swell up, which can cause difficulty peeing. If this happens, ask to be prescribed Tamsulosin. It works wonders. He’ll probably have increased bowel frequency and urgency, and pass clear or bloody mucus. This is entirely harmless, although slightly alarming at first.
RT side effects peak several weeks after treatment ends. 6 weeks after I finished RT my bladder issues had returned to normal (although I still take Tamsulosin and probably always will). Bowel issues take longer to calm down - the best part of a year in my case. I’m now 2 years post-RT and have been off HT for 10 months. No “quality of life” side effects. I still have no libido, but that doesn’t matter to me. Occasionally I still pass mucus, but again now that’s just something you accept. Life is good.
Best of luck,
Chris