@CAL Y my dad had dementia and oesophageal cancer, the hospice were really good and we had a bed for dad in his front bedroom which was where I slept and they provided carers twice a day but it was not enough. In hindsight dad should have been admitted to the hospice where the staff are trained and I could have spent more time just being with dad instead of being his full time carer who was going out of her mind with worry. Dad would not have known that he was in a hospice because I would have been with him anyway.
We muddled through but dad died about 3 weeks later and although we managed, I was not prepared for how hard it was. Dad became increasingly frail and weak, there was nothing of him in the end, bag of bones was how I would describe him. The worst thing was that he always cheerful and believed he was well when he wasn't.
Please get more help, it will become increasingly difficult for you, emotionally and physically. My dad weighed nothing in the end but my husband and I had great difficulty lifting him off the bed and onto the commode. It was actually quite frightening but we did it. We were neither prepared or trained for looking after a dying person. I am a good bit younger than you and it all but finished me off.
Sorry that I am not more positive but it could have been so much better for all of us if dad had been in a hospice.