We just got some really bad news

My family just found out that my grandfather has prostate cancer. He doesn’t want to be treated for it. They don’t know how much time he has left. I haven’t seen him in a few years due to the fact that he lives almost 12 hours drive from me and I haven’t had the money to go see him but we’ve decided to go see him around his birthday in the beginning of April. I don’t know how to handle this news and I just needed to let someone know. If you read this, thank you. I’m just trying to come to terms with the fact that it may be my last time seeing him. We’ve lost so many friends and family members to cancer. I don’t know what to do.