So sorry to read this volty.
The loss of a loved one is always so very hard, but you can only hope that the inevitable is not delayed, and the he does not suffer.
That leaves everyone else to start the painful business of assimilating the loss into their own lives. That takes patience, and lots of love and support.
I am sure you know that the AB community are good at supporting each other in difficult times, sometimes the comfort of strangers is exactly what you need to let your own feelings have an airing.
Everyone is here, and thinking of you.