How do you let someone know it's okay to let go?

My father had a stroke on his birthday, Christmas Eve. He is now paralyzed on his left side and severely weakened on his right side. He is steadily going downhill and we’ve been told there really is nothing more they can do. My family doesn’t believe in prolonging life, but also know that none of us are ready to let go. The few words he has spoken, he has no regrets and loves us all, very much. We want him to understand that it’s ok, if he is ready, but if he’s staying to fight this, we’re there for him. How do you do both, at the same time?

My father is my rock. He’s a big reason why I continue to fight cancer, he tells me all the time, he didn’t raise a quitter. Selfishly, I am not ready, but he’s suffering. I don’t want that, either. Tomorrow afternoon, we’re all going to be there with him, just to let him know that we love him and want him to do what he needs to do. I really don’t know that I can say those words, that I’m ok with him going.

He’s gone from speaking, to 95% non-verbal and 60% non-responsive. He’s no longer eating and has very severe medical complications. Liver failure, kidney failure, diabetes – to name a few.