I can also relate to the pain I watched both my parents take there last breathe. I work in the hospital so everything came down to me and I had 2 young kids at home also. The best thing you can do is make sure his will and everything is in order the way he would like it distributed. Take some time for yourself to pray if you believe in that, and then just be there for him and let him know you are there. In order to take care of him at all you have to take care of yourself. Good luck in your journey and I pray for you and your family. Peace to you