Thanks folks
At the moment the hospice is full so his local NHS is looking for a bed in a nursing home for him.
My two children are of the "let him go gently" disposition.
I think that if it is inevitable then quick is better than slow.
Dad's brother agrees with me. Once we have managed to contact his sister to confirm then we will be pushing for no heroics.
Thanks for the info. Keep praying for him he has a very strong Christian faith.