Make a novena for him, Sam. I did for my father and he was baptized on his deathbed. I remember a story Archbishop Sheen told about a dying man who refused even to talk to him. So he finally told the man to just say, "My Jesus, mercy." A short time later, few hours or days, a nurse called him and told him that the man had died, but the last few hours he repeated over and over, "My Jesus, mercy."
I will take this to Our Lady. No better advocate ever lived. And please pray for me, as my health continues to decline.