Dear Chris
This may not help now, but once you get started on the treatment it may not be as bad as you fear.
Not everyone has all the side effects of HT, some people have some, others have very few.
This tiredness I think is normal at the start of these drugs, and yes, it has been a blow that the RP did not work.
Our situation was slightly similar in that my OHs op was cancelled on the operating table as the node spread was there discovered. A real blow in that they did not tell us this til 36 hours later as the surgeon had gone home and everyone else was acting dumb!
So we know how low you are feeling. But there is a plan b, and you have started upon it.
Please keep with it, the days to come maybe dark, but better to spend the winter this way, than the summer when instead you could be out and about.
Once RT starts the time will pass quickly.
All the best
Alison