REEG,
It's very good that you got help from family last week, and able to be with your grandpa as he passed away.
Hopefully, your family will continue to be supportive of you and help provide distraction through the funeral services. It's great that you're thinking ahead and trying to prepare yourself for the worst. I agree with catgoesmeow, you are very brave. Kudos to you!
I hope that things go smoothly for you. You have my sympathy in the loss of your grandfather ~ gentle hugs to you