Hi Angeline
I have to ask how long is a piece of string!!!instead of thinking how long will it last,think how long you are going to have your Dad.
People choose there own time and own way to die,embrace it and do all you can,it might sound a bit old fashioned ,these days we hide it away,in hospitals homes or hospice,I am not knocking it,it should be the patients choice.
I am in the same position as you,my husband has been on palliative care for seven weeks,people telling me it will not be long!!! I just think you do not know my husbands will to live,and I would not have it any different,it’s not a bother,it’s a wonderful experience,no tears or sadness,lots of help carers in 4 times a day,now have night sitters,district nurse every day,and lots of love and care from me and are daughters,a man could not ask for more care so embrace it.Eve