The only hope I can give is that one person is never a statistic. You never know what life brings just from a doctor's spreadsheet.
You are most fortunate in one regard, even if it doesn't seem so now.
You still have time with your father, and he with you. If in fact he is at the end stage, your father has time to say his goodbyes to those he loves. And you get to say goodbye to him in your own way and your own time.
That's a gift.
Twenty-five years ago this week, I dropped my father off at the airport (he was a helicopter pilot) and our last words were angry words about something not important at all. A week later, he crashed. I never got to say goodbye, and our last words were said in anger.
If this is his time to go, you have a chance to let him know how much he means to you. In the big scheme of life and death, that's not a bad way to go.