Sorry to hear this sad news.
I lost my Dad in April this year. He had a few conditions, But alcohol was the main problem. He died at 58, and drunk most of his life. His heart finally stopped completely. They managed to restart it again after 20 mins, By that point it was too late. He stayed about 130 miles away, so I never got to see him often. I did manage to see him before he was gone, But that horrible memory will stay with me forever. This has played on my mind mentally since then. No excuse for my drinking, but it has got worse since then.
We got to all stick together. I am really going to try this time. I don't want to put my OH and Son through this.