Yes, these days they can just zap individual metastases with radiation, as long as there aren't too many of them. If a lot of metastases appear at once, they can give you either chemo or Pluvicto. And the second-generation ARSIs (the -lumamides) are highly effective at slowing or stopping prigression, especially in combination with ADT

If or when your PSA hits 0.2, since that's your oncologist's trigger threshold, a PSMA PET scan can show you if any of the isolated cancer cells floating around has started to multiply and produce a micrometastasis large enough to detect (there may well not be any).