Death and how to deal

So my mom told me my grandmother is 'actively dying'. She has taken to her bed and is refusing to get out. She has been to the hospital 4 times in the last month. My grandpa is much healthier than she is but he keeps saying that once she goes he won't have anything to live for. My grandparents raised me and kept me with them for the longest out of any of their grandkids, so they ask for me a lot. I spend as much time with them as I can but it is very hard because my grandpa frequently makes comments about how he doesn't know what he is going to do when she's gone or he gets emotional and it makes me so sad.

I wish there was more I could do for them other than sitting with them and being their comfort. I honestly don't know what to do or say other than holding both of their hands or looking at old family pictures with them.

I'm also worried about what I'm going to do emotionally if they both pass one right after the other. I keep thinking maybe I should look up grief counseling for when it does happen but that means I have to admit that they both are going to be gone, and they have ALWAYS been there in my life. I just don't know. 😓😔