craig,

to you and your wife.
i'm truly sorry for the situation you're both in. you are doing the smart thing to work on your estate planning.
since your drs have let you go i'm wondering if contacting a hospice might help you and your family. your dr can write an order for hospice care. and that doesn't mean you're going to die on a specific date. they can begin caregiving at least 6 mos prior, maybe even more.
i know that hospice care is so excellent. please let us know.
my thought and prayers are going to you and your family.