Great story. You’ve got this!
I realize this is wholly-unsolicited advice, so feel free to ignore if I’ve stepped on your toes, but from personal experience, I’ve found that writing is such an emotional journey sometimes we wrap too much in a single manuscript and all the life events surrounding it prevent us from finishing it, because there’s a lot of baggage in the background keeping us from doing so. It happened to me for sure. Still happens to me. Not the same story as you, but I know the feeling.
It might be time to start a new story from scratch. A new chapter. Maybe the first one wasn’t meant to be finished. Again, feel free to ignore.
Good luck with your writing journey.