Feeling Anxious About What Lies Ahead

Assalamualaikum. I've been in a relationship with my husband for over a year now. We are from different religious backgrounds. Even though I am not very religious myself, I do believe in God. Right now, he is also not particularly religious, but he has expressed that he would like to reconnect more with his faith in the future, which I support. However, I feel a lot of uncertainty and fear when I think about the future. He has been living in a diverse society for quite some time and holds a balanced view in many aspects of life. He supports that I want to work, even when we have children, and he is also open to sharing in each other's traditions. He has also made it clear that he would never force me to change my faith. The only important point for him is that our future children would be raised in his religion, which I am generally open to. What worries me is that his views might change significantly over time, especially if he becomes more devout again. He has said himself that 'In matters of faith, there are no compromises.' Even though I understand the concept, this statement makes me feel unsure about what that could mean for our future together. Another challenge is that his family is quite religious, although we do not plan to live near them. On the other hand, my own family is rather critical and not very supportive. We have talked about these topics many times, but I still feel a deep fear that his mindset could change completely one day, and that we might end up separating because of it. I have heard many stories like that, which makes me feel even more insecure. Has anyone been through something similar? Or can you offer any advice?