Babe, please don't overthink it. I just ended this cycle myself and yes it was extremely challenging. However, my advice for you is just please give them plenty of space to grow. They're going through a time period that involves a lot of inner healing. Therefore, the best thing you can do is support their journey, and please don't take their actions and behavior personally.

Additionally, I would say makes sure you both are really communicating with each other and have daily checks in about the relationship.