How can I be there for him as much as possible?

My boyfriends grandparents raised him, and they are getting old. His grandma has been in a nursing home for a few years now. She gets sent to the hospital at least once or twice every 3 months for being sick etc. this time she’s getting sent because of this medication she is on I guess. My boyfriend keeps saying he knows that nursing home is going to kill her and my heart breaks for him. I am not sure how to help or what to do for him. 😕