I think you will find that you have to have multiple metastasis as well as being castrate resistant before they really push for triplets therapy. You don’t want chemo until it’s appropriate.

I’ve had PC for 14 years but only one metastasis which was zapped. Chemo is not appropriate in my case and it doesn’t sound like it is in yours. Mayo doctors want to do what is best for you. Chemo is hard on your body and mind, best to put it off until it is most effective, which is when you have multiple metastasis that can be treated all at once