We do feel for you, Paul; Tony's cancer started romping away beyond the reach of hormones by October. At this stage the pain had returned and was getting quite severe. He had been taking various analgesics in a rather haphazard, as-needed way, but eventually phoned the GP who was great. She prescribed Solpadol (paracetamol plus codeine) plus ibroprofen, four times a day, no messing about. Within a day or two he was pain-free.
He started Enzalutamide, but continued taking the pain relief for a month more, until he was sure it was working. When his PSA went down again, he phased out the painkillers and is still pain-free. He had a few nights when he felt a bit strange and jumpy, probably because of stopping the codeine, but that was brief. Today he is in the middle of shifting two tons of gravel from our gate to the far end of the garden by wheelbarrow (not all today, this is a work in progress!). He doesn't have the energy he did, and needs to sleep more, but we can live with that. Otherwise he feels and looks well, and is enjoying his food and drink. We know we're on borrowed time, but that will do nicely for now and will at least allow us a Christmas that is something like normal.
I hope the "magic beans" work as well for you, when you get them In the meantime, be kind to yourself and keep taking the tablets to stay on top of the pain.
Marje