This is why i love mudcat, real people real situation....Vectis, no one can tell you what to do, merely give an opinion. we dont know your dad, but we can say what we would like if we were in his situattion.
I would just like to say that, our societies seem hell bent on maintaining life at any cost, sometimes dying isnt the worst thing that can happen, we also have a fear of death, we should embrace death as we do birth. This situation would be a lot clearer to everyone if we did.
Vectis, i wish you and your family well in the next few months.