Yes, it seems the only way to know whether other cancer cells will come out of dormancy is to stop therapy or if they become castrate resistant during ADT and the PSA rises with their growth. I'm inclined to take ADT for one year, then switch to Darolutamide for six months. If PSA is acceptably low at that point, take a therapy holiday. If PSA begins to rise with Darolutamide, add ADT back in and ask for a scan to determine whether spot radiation might eliminate whatever's still there.