My father was recently diagnosed with metastatic prostate cancer and has been having hormone therapy treatment, which he is responding well to.  I want to support both my parents through this as best I can, but other than the medical journey I don't really know what to expect in terms of our personal/day-to-day lives. 

He has very admirable strength of character and a fantastic outlook, but often this means he wont tell us what's worrying him or if he is in pain or discomfort as he doesn't want any burden put on us.  Are there certain things I should be looking out for (hopefully in the distant future)?  

I am very much trying to be positive and focus on the good things we can share together now, but I am also the type of person who needs to know the not nice side of reality and how I can prepare myself so I can support others or have the right plan in place.  It isn't a conversation he wants to have but I personally need to know how to recognise when things aren't great and what the "downward" journey will look like.   

I don't really know if i have worded that all right or if I even know what I would like to hear back, but any comments would be greatly appreciated.

Thanking you all!