Orhid46, don't be despondent, there are a few treatment options available. First, docetaxel can be repeated. Second, it could be preceded with another form of chemotherapy: cabazitaxel. Third, we are close to a decision on immunotherapy approval with Keytruda. However, if the PCa is in his bones still, as others have said, Xofigo is available and very effective.
Good luck
AC