I have a couple thoughts.
I would love for BYU football to reach out to your dad and have him be the Hero for the Day type thing. Bring him in to a practice and have the team give him some encouragement. He is a perfect for what they do that for. A lifelong fan. Loves BYU. A class president for goodness sakes who built the bell tower. Please reach out to Coach Sitake. I'm thinking he would have you in.
BYU would also have him come right in to the Marriott Center for a practice this week if you contacted Tom Holmoe or Coach Pope. No doubt. The BYU bball team would do the same thing as the football team if your father prefers basketball to football. I think it would be awesome if your dad got to watch a practice this week or a portion of it, and the basketball team went out with your dad and rang the bell tower in his honor.
Praying for you and your father that he will be sustained in these last days that he will be able to do these things that would bring him joy.