Yes, indeed, I'm so sorry to say that so far with every day it grows more difficult. This will certainly be the most difficult post for me ever on FR.
An update: I don't want to go into details. But to sum things up, the doctors tell us that he isn't experiencing pain, but I am terrified that he is experiencing incredible anguish.
If I may ask the following: Right now is the land of the grey murky in-betweens. Perhaps this time is needed, both to grant time for potential healing, and time for proper evaluation. But I pray that my father isn't experiencing it consciously, and that this land of the in-betweens passes quickly, so that he will soon either experience miraculous meaningful recovery, or, merciful, natural death and communion with God.
Please pray that his health providers, and we his family , do all the right, good, and moral things, in all domains.