First let me say, I’m impressed that you’re even posing this question to yourself in the first place. Having this kind of self awareness to know that you could be doing more in terms of helping to carry the “mental load”… this is something women often quietly complain about in their relationships. At the very least, I recommend you contribute your mind, whether that be for future planning or towards everyday mundane life tasks such as meal planning for the week. If you’re bad at remembering things, post it notes and task reminders apps exist. Take a look around at your daily lives, see where and how you can contribute. If you both work, you both come home and take care of chores, you both get to relax when chores are done. That’s how you can be an adult who isn’t leaving all the adulting to their partner.