I think you have bigger problems than this expectation from him, but this is indicative of his attitude to you and to women in general - which is appallingly selfish and sexist.
He's got a bloody nerve! Going out as often as he is and doing precious little at home when he is home. He may be working long hours but he gets breaks and you're essentially 'on' 24/7.
No! He needs to step up and be a parent not a part time lodger!
My now ex - who tried his luck on occasion - didn't even attempt this kinda shit! When dd was still very young he'd get in from work and either cook himself or take over baby duties while I cooked.
Personally I don't think he should be going out more than 2/3 Eve a week, he's not just a husband he's also a father now and he needs to be pulling his weight at home with parenting. I'd also recommend you get out 2/3 eve a week too even just for an hour or 2. If baby is very young that can be tricky while establishing bf but once they're about 6/8 weeks old it should be manageable.
"He doesn’t do much house work" seriously - this cannot be news to you WHY have you had DC with this selfish twat without at least attempting to address this attitude first? I don't understand women who do this.
Again - now ex - when we were first married and living together I did the bulk of the housework initially as I had moved to where he was based (army) and didn't have a job straight away BUT he still took turns cooking. He seemed to think I was there to pick up after him and to remove gym kit from bag to launder etc - soon disabused him of THAT idea. When I did get a job and was actually doing longer hours than him he seemed to think I'd still do most of the housework until a "heated discussion" one weekend when I made it very clear that ship ain't sailing! All this LONG before we ttc.
When dd was born he took 2 weeks annual leave (no pat leave then), and looked after me recovering from c section and establishing bf, took turns rocking dd at night and when he went back to work as I said he'd get in from work and either he'd cook and I'd do bath and change or vice versa, whoever cooked the other washed up and stuck a laundry on. The one who hadn't done this put the laundry in the dryer etc etc
He went to the gym in lunch break (had to maintain fitness for work), had one night out a week for a hobby but this was actually a responsibility as he was on a committee for a sport club. Once bf established I had one night out a week I went for a swim.
Your dh seems to be doing bugger all at home!
"Seriously do not enable this man anymore." Yep! "He'll expect you to do everything after you return to work, too" yep! "And don't blame his mother, he's an adult. He's capable of accepting that women aren't skivvies." Where's his father? He a lazy entitled shit too?
The '1950's' thing gets bandied about a lot on mn in reference to this sort of attitude - here's the problem with that - my parents and grandparents had 'traditional' marriages - that did NOT mean the men doing sod all! Under a traditional model the men did all the 'heavy' jobs - carrying shopping, DIY (and they did a lot more of this then!), putting the bins out, decorating, gardening, car maintenance PLUS they took responsibility for more of the mental load too - budgets and financing, organising wills, insurance, mot, booking holidays, booking babysitters, disciplining children... My dad eg always organised a meal out, babysitter, flowers, card and gift for their anniversary.
They also wouldn't dream of just dumping their clothes etc wherever expecting their wives to trail behind picking up after them, they put things away and tidied up after their own backsides because they were PERFECTLY CAPABLE ADULTS.
Men now that would CLAIM they're fulfilling a 'traditional' role actually aren't, they're just lazy.