Make that clear to him, you are a sahm so you look after the kids and kids stuff whilst he's out at work. The rest of the time he should be 50/50 in the house!
Totally agree - your hours are the same as his hours. You start 'work' when he leaves for work and finish when he gets back. Why wouldn't all chores and childcare outside that be shared 50:50.
he’d love to see what I do all day
Which is your opportunity to say, "great! Take a week off, and i'll visit my parents... alone." Call his bluff.
OP, I'm guessing he didn't take any shared parental leave? Why on earth not?! :( I feel like a broken record on these threads, and I'm sorry it's too probably now too late to change in your case, but why do so few couples have the man take any parental leave? It only needs to be 3 months at the end of maternity leave... or even just 1 month, where he has to do everything himself day after day while you're at work. And he can be held to the same standards that he set you for house cleanliness or dinner ready on the table.
I didn't know how hard it would be to have 2 pre-schoolers day after day before I had them. How exhausting, and mind-numbing it was. But somehow we expect men who WOH to magically know and sympathise. Why would they if they've never had to do it themselves?
Why are we not demanding that they take their turn on parental leave, and learn how to look after the kids themselves?