We seem to be on a similar pathway. I had two positive pelvic lymph nodes following from RP. The regime I'm on is ADT (3 years), 6 cycles of chemo (just finished), and 8 weeks full pelvic RT starting this week. They will also add a second line hormone drug which I think is darolutamide but not confirmed yet.
Some thoughts on the chemo....
Try to do something nice the last week before your next cycle. Could be a short holiday, visit to a nice restaurant etc...stuff you like. I found it helps to keep a positive frame of mind.
I did the cold cap and didn't lose any hair so it was worth it for me. The first 10 mins are uncomfortable and after that it's totally fine. I used to put on headphones and play AC/DC for the first 10 mins to distract myself.
Taste gets affected for about 7 days afterwards. I found chewing ice cubes helped marginally. As someone who enjoys food (don't we all) I didn't enjoy this part.
Fatigue gets worse as you go through it, but I was still able to work from home taking the odd nap in the afternoon. The first 5 days afterwards are the worst, particularly when the dexamethasone wears off.
They gave me lots of stuff to mitigate side effects. Pampoprazole for reflux, Mycostatin mouth drops, mouth rinses, Neulasta injection for the day after. I took all those and had no bad side effects and as you say everyone is different but hopefully you will be fine.
Best wishes with it all π€