My partner is currently undergoing radiation for prostate cancer with 21 PSA. I think they shortened his number of treatments. It was originally 40 days. Every day he takes the dozen or so vitamins/minerals/supplements I give him. He has not complained of much irritation down there. Mainly he has to go every 1.5 or 2 hours day and night, and feels some generalized fatigue. He had a PSA of 10 just before Covid hit, and did not do the next year’s annual physical becauuse he wanted to avoid Covid exposure. So when they did 16 biopsies with the 21 PSA, every one had a score of 2 or 3. THey decided to do anti-testosterone for 2 years and radiation rather than chemo or surgery. His total body scan did not show any metastesese. He is 78, so I hope we have 10 more good years with the promising news reported here.
With a great surgeon, removing the prostate is an excellent option with no urinary nor ED problems. However, at his age, he has probably made the best decision.
Good luck to you both!