How to handle SO who expects you to clean and cook

We are about to have our first baby and as we prepare I’m trying to think of all the things we can prep for in postpartum. I asked my husband if he’ll be ok letting some household chores be put on the backburner or at least not done as frequently. *its worth noting I do at least 75% of household chores but he does help. We both work full time jobs and even though I work full time hours I have flexibility in how I split up those hours (to a degree).* He said he didn’t want the house to become a mess and when I asked how he wanted to split up the chores he said he didn’t think he wanted to answer because he didn’t want to start a fight. We’ve had convos before about this and much to my disappointment he’s made comments that because he makes more I should do more around the house because I have flexibility (even though we both work). He does help but I have to nag him often. Now after having a baby, I think he expects me to keep up with housework. I don’t know how to get through to him how insane and unreasonable this expectation is. It’s bad enough he thinks I should handle the majority of the housework when we both work and are contributing to the home, expenses and shared responsibilities but it’s a whole other ballgame when he expects postpartum that I’ll be nursing, trying to heal and recover AND keep up with the majority of the housework. Anyone been through this? Anyone have advice on how to handle it?