Feeling a bit lost after my partner came out as non-binary

My partner and I have been together for three years, and recently they shared with me that they identify as non-binary. I want to be supportive and understanding, but I’m realizing I don’t fully get what that means for our relationship or how I should adjust the way I think about us. I’ve tried reading articles and watching videos, but it still feels a bit abstract to me. We’ve talked about pronouns and name preferences, which I’m doing my best to respect, but I’m also struggling with some old ideas about gender that I didn’t realize I had. It’s important to me that we both feel seen and loved, but I’m worried I might accidentally say or do the wrong thing. How have others navigated shifts like this in their relationships? What are some practical ways to keep communication open and loving while I’m still learning? Have you experienced a partner coming out as non-binary after you’d already been together for a while? How did you adjust your mindset and relationship dynamics without feeling overwhelmed or confused?