C.A.
A week ago my father had a heart attack too. They cooled his body temperature down for two days before they raised it slowly and eventually unsedated him. The next day as I sat with him, he said he was very tired. I told him to sleep and he said he was afraid of dying and wanted to live for many more years.
It occurred to me that he was afraid that if he slept, he would not wake up. I told my mother, who told the nurse our conversation. The nurse tried to share with my dad that he was hooked up to all these machines and if anything happened they would know about it immediately.
It has been interesting to watch my other family members during this crisis. My sister basically has not left his bedside. My mother and brother are there every day but are trying to give him some room to sleep and for the doctors to work. I live an hour away and I have three children. I am there when my older two are at school but must return to my town when school is over.
Additionally, like you, I realize that this is going to be a long term recovery, maybe not physically but certainly mentally (my dad and mom were at a restaurant when it happened; he told my mom he never wants to eat at any restaurants ever again).
Are you the only one in the picture for him? If not, I think it will be important to spread out the 'help'. If so, I think it will be a struggle to have it not take over your life. It sounds like you are using the resources that the hospital has access to and that is important. My family is very resistent to speaking with the patient coodinator or social worker and anyone else for that matter. I personally think this is ashame. These resources are there to help.
I wish the best to you and your dad. Good luck.