I will pray for your GrandFather 2honest.
Is he sedated with medication?
Remind everyone who visits him, to let him know they are there supporting him and waiting for him to get better. He can hear, even if he is sedated/sleepy.
People seem to do better if they have the desire or a reason to live. Family, depending on his getting better, is a good reason. Stay updated closely on his care. That keeps the hospital staff on their toes. It seems you get sick quickly, but recovery is in baby steps. I will pray for your family too. They have to help him recover.
It is amazing what the prayers of JTFers seem to be able to accomplish.