Hi
My husband had a similar route to you but he was on bicalutamide plus prostap, you can see his profile the PSA readings steadily climbed but it wasn't until he had a reading of2.5 when it was diagnosed as advanced, it was monitored by annual scans and three monthly PSA blood tests. Once it had reached 6 it was deemed be castrate resistant and therefore aberaterone was considered but after his medical background enzalutamide was administered.
Hope that helps