If you’re open to it I’d love to hear what your family looks like too?

Hi, I'm just wondering if any men have advice on how to approach a conversation with my male partner about mental load to do with any potential future kids? I have a lot more experience with children than my partner does and also think about how I'd like to parent an awful lot, have started a parenting notebook with all of these thoughts and ideas. Worried that I will end up being the default parent despite the fact that my partner wouldn't want it to be that way - I want to help him see all the labour I'm already doing for a fmily structure we don't yet have and won't be able to for a while. I want to acknowledge that he does more of the financial labour for our future than I do. For context I am assigned female at birth (but don't strictly identify with this) and he is a cis man.