My Dad died of colon cancer last August. My sister and I took care of him at home at the end. Hospice was a great help. They got medical equipment such as a hospital bed, and the nurse was a great source of info. They also helped with the pain meds.
My Dad became uncomfortable sitting after a while and a foam donut was a life saver. His feet swelled and he could no longer get his shoes on, so we bought slippers that looked a little like loafers but were big and comfy. He lost his appetite and so we tried to tempt him with his favorite foods and things he considered a treat. He became increasingly tired, but we encouraged him to get up at least for a while every day for as long as he could. He became confused at the end, but we just went along with what ever he was saying. We didn't want to distress him. At the very end he just went to sleep and 2 days later he passed away very peacefully. My Dad was a devout Catholic and got comfort from us saying the rosary with him.
We made a list of all of the people we would need to call when Dad passed and then divided the list between us so 1 person didn't have to do it all. We made the funeral arrangements ahead, pre ordered flowers, made a collage of pictures of Dad for the funeral home, and so on. Making the arrangements helped us stay busy when there was nothing else we could do.
May God bless you and your family during this difficult time.