Hi Suez, I read this post after responding to your other post about Ron's recurrence. Play that video over and over while he's in the room, talk about all the milestones that are coming up for your granddaughters, how wonderful it will be for you all to be there for them, how much they enjoy him, how much they remind you of how he looks or the way he does something. Have them spend time together as much as possible.
Maybe this will help: Going through it is temporary. Sure, it won't be easy, and the recovery won't either, but he's been through quite a bit already...he might as well keep treating it. No sense in giving up after all he's been through already. And, if he changes his mind later...it might be too late and that's when things will take a turn for the horrific. Better to take care of it now while it's still an option. Get through it and move on to recovery and being a survivor again. Nothing is as permanent and as hopeless as being 6 feet under.
Oh, caregivers get the brunt of patient's emotions, huh? It sure hurts sometimes. Where did the man go? Cancer took him away. But, maybe we can help bring him back. Wishing all of you great success and lots of peace.