I am so sorry to hear this boydsdodge, I lost my dad 5 yrs ago this April 9th, he died in a auto accident. I was mad, mad at him, mad at me, mad at the car, you name it. To this day I wish I could have said goodbye.
Enjoy the time you can be with him, tell him how much he mattered to you. Let him know you you will be strong and take care of the family, sorry getting choked up, these are the things I wanted my dad to know but never got the chance to tell him. I have 2 daughters and a son, I would want my son to take care of his mother and sisters. These are the things I would want to be at peace with. Just be there for him, and god bless you and your family in this sad time.