Alaskan, hugs to you and your dad. So hard to see a family member suffering. Especially, when you know that they can be taking better care of themselves, but they don't. Don't beat yourself up about not being able to change him. Just love on him. Yeah, ageing process, even without the complication of cancer does seem to change the personality. Tough to see your loved one falling away by inches. Prayers for you and yours.