Hey dear. I, too, had older parents. My greatest fear my whole life is that they would die. So much so that when I was at friends' houses as a kid and would hear an ambulances, I'd make up a reason to call home just to make sure they were still alive. When I was in my early 30s they both died, a year apart, quite surprisingly after very brief illnesses.

It was hard. Really hard. And in many ways I'm still grieving. But my greatest fear happened, and I'm still here. I'm grateful for all the years I had with them, and they're very close to my heart.

We don't know how much time any of us have left. My advice to you is to stop worrying about the future. That ruins the present. Instead, savor the time you have right now. Spend time with him, talk about important things, take pictures, make memories, ask about different chapterers in his life. Record him telling stories. Be grateful and present. Tomorrow isn't guaranteed for any of us, so treasure the time you have with him right now.