Terriex. I think you'll be able to private message after you've done 10 posts.
It's sad that your dad has got prostate cancer but it's lovely to see that you are doing your best to support him.
As you are probably aware a high percentage of men your dad's age will have the disease. The important thing to remember is that your dad's cancer is curable. I'm sure other blokes on here with a similar diagnosis will assure you of that.
If all goes well his life span may not be affected. I'm sure you'll have many happy years left with your dad.
Best of luck to both of you.