I think it will be effective to spend more time alone with your father, talk about the pros and cons, and let him do some other things, such as exercise, so that he can feel your intentions. Of course, you'd better urge him to be together at the right time, such as exercising. People's hearts are all meat, not to mention that he is your father. As long as he can feel that your intentions are good for him, this is the most important thing! Wish you success! In fact, everyone says just do what he says, but sometimes, after all, you have to believe what the doctor says. If you let him stop until he has a problem, the damage to his body may be difficult to make up.