@jeffmarc offers useful thoughts on depression and exercise.

I'm attaching the University of California San Francisco guide to ED.

Sex is different after surgery but there can be sex. One has to change the thinking from the dominance of traditional sex to one of more variety.

I'm also attaching an article on the role of exercise. He does not need to do Ironman's, find something he likes and do it, for me, riding my bike, playing Pickleball, hiking, swimming... It should involve some form of cardiovascular and resistance exercise.

That's "nice" that you're meeting with an oncologist, but, I have never discussed radiation treatment with mine, I have a radiation oncologist who does that. Your oncologist can discuss ADT, ARIs. Chemotherapy...

That chart is one I make, useful when discussing with one's medical team, a picture is worth a thousand words.,,

Finally, an article that discusses there have been many advances in treating advanced PCa, yes each has it side effects, but people on this forum will say, "we're still here...!"