I've definitely been where you have been. Our child is 14 months and DH works from home same hours. I tried really hard to be super woman and do it all as stupidly I felt that it was my job. DH was quite frankly useless in the early months and we had to have several serious chats, including giving up the PlayStation ffs lol. If your DH won't help then he should pay for you to have some extra help with a nanny / house worker of some kind. Or alternatively he steps up.
You also have to become a bit more bossy once you have kids, just ask him / tell him what to do. Eventually he will become more domesticated but it takes time. Men are slower to adjust to parenting and the new priorities.
Pleased to report my DH now only plays PlayStation once in a blue moon now.
Also recommend a holiday where there is a kids club / baby sitting and a spa so you can have some time chilling together.
Do you have any family locally who can help out?
Also consider going back to work PT and getting childcare in house or nursery or a combo. Whatever works for you. Will give you a bit of variety and some money in the bank to spend on yourself as you have earned some treats Queen! 👸 👑
How are you on self care? You sound really down. You need some time to yourself, long bath with podcast and candles and Epsom salts, massage, meditation, yoga, go out for a run, walk (without baby), whatever floats your boat.
Carve out time for you.
I think it's ridiculous he is sleeping until 11am, 1pm, that is crazy. What about alternating between lie ins, so Saturday you have one and Sunday he has one? Only fair.
However stressful his job (I mean he is working from home so sitting on his arse all day), I guarantee it's not as physically and mentally demanding as being a SAHM. It's the hardest thing I ever did, I did a year and am back to work PT. So much better to have variety.
And any comments about wfh being the same as going to work, I call bullshit, I have worked from home for years and years. It gives you more time and flexibility, and a time save from lack of commute. I mean if he was in an office sure he'd spend time talking to people in the office, and killing time some other way. There needs to be an upside for you to this, bet you end up making him lunch, clearing up and fitting around his schedule too? Actually it creates more work them being around.
I think any talk of leaving is ridiculous, it's going to take work for you to be happy again, and feel it's fair but keep talking and bossing and make sure you get time.
Also I recommend buying a big loud horn and waking him up with it on Saturday's or better still give it to you child and tell him to go in and 'surprise' daddy.