Fiancé wants us to move in with his parents because father is ailing

Happy thanksgiving….

I feel really shitty about this but I just wanted to vent about it somewhere because I feel like I have no space to talk about it. I got engaged a few weeks ago. A week after my engagement my fiancé got a call from his dad telling him about a recent appointment with his doctor. His dad was told by his doctor that he has a life expectancy of a year and a half. We knew that his dad had cancer but we thought he had more time than that. This news brought up a backup scenario that we had planned for if his dad’s health took a turn for the worse. We talked about moving back to his hometown where his parents live if his father’s health severely declined. We are currently a couple hours away from where his father lives. My job is flexible so it doesn’t affect me that much career wise to move. My fiancé plans to quit his current job and get a new job back in his hometown. He is looking for a job currently. He says that we can live with his parents/my parents who live in that city.

I’m secretly miserable about the idea of living with his parents. They’ve already been constantly around since the news came. His mom has always made me feel insecure and has even made me cry before. I want to support my fiancé through this experience though. That’s what is most important to me.

He says that staying with his parents wouldn’t be permanent. He said we’d eventually have to get an apartment in the area of his parents long term & maybe we could keep our current place and go back up to our regular house on weekends. He also brought up yesterday that, alternatively, if my fiancé can’t get a job near his parents, then his dad said he’d like to move in with us in our house. I’m actually even more miserable about that idea because it would be less possible for me to get away from them on weekends. I’ve always found them overbearing but this is a whole new level.

I feel really guilty about my feelings because my fiancé is the one who is truly going through something difficult, not me. I’m not sure what to do. I’m planning on just carving as much alone time as possible if I live with them by coming home later. I’ve already stressed that we could only live with them temporarily and could not live with them if I have a baby.

I’m not sure exactly what I’m looking for. I guess strategies to deal with situation? It would be nice if people understood where I’m coming from too?