I think a total rebalance is in order op. Sit and figure out all outgoings. Figure out all incomings. For starting point both pay 50/50 towards everything and then split 50/50 what's left as "Your money" to do with as you wish. Any savings cpount as bills and should be taken before the "your money" stage.
Then move o to personal time.
He works 40 hours, you work 20 (actual time may vary)
OK, In that case you will do 20 hours child care/housework.
So when ypu have children around that you're sole carer for, that comes off the 20 hours. Cooking dinner, 1 hour off the 20 hours, hoovering, 1hour off the 20 so on and so forth.
Once you and he are doing 40hours you split everything else. He does t get to not do a ything because he's worked 40 hours, so have ypou. He does t get to sit and relax at night because he's done 8 hours because so have ypu.
If he doesn't like this new split where you're equal partners then ask what a fair split would be, have him suggest fairness. But be sure you come to a fair arrangement and stick to it. No backsliding. You must also stick to your guns, eg: if its his job to hoover the lounge DO NOT hoover the lounge yourself, ever, not even once. 