I wouldn't. Not because there's anything wrong to being a sahp to older children or anything like that.
But because of your dh. He isn't useless. He just doesn't see these things as his job, just yours. If he isn't supportive of you being a sahp, relying on just his wage will become a huge pit of resentment.
And he is unlikely to view the money he makes is shared which can really make life difficult.
Now you have finished your masters, could you take an paid break from work. Save some money up, so you aren't just relying on him. Lots of employers will let you take a career break and then go back to your job after. I know you say you don't really enjoy your job, but this could give you some breathing room. Sometime to distress and think about it. But you also have a job you can go back to.
You may feel slightly different having had a break or you may decide to go back and change jobs.
Or at least reduce days.
Your problem here is your dh. I am not one to say ltb. And i am not saying 'you need to leave him', but everyone of my friends who has been married to someone 'a bit useless' has found their lives so much easier as a single parent. What I am saying is that HE is a big cause of your stress.
I don't think giving up your financial independence, when he won't support it and is a cause of your stress is really going to help you.
I am not wonder woman, not particularly special. I have a 'big job' (as its being described here) I have also been a single parent while doing that job. My partner now lives with me and my children and is great support and he works less than me, so he does do a bit more of cooking and house work etc.
However, I still do my fair share. And I still am present in the kids lives. I make their arrangements, I cook when I am home. While my job did allow some wfh before covid, I am home now so do more of the cooking as dp works outside the home. It takes 10-15 min at lunchtime to prep some food.
I haven't checked out because another adult in the house is willing to take on more roles. If the kids are sick, they want their mum so I generally take sometime off. Though dp is willing to and does if needed. Their weekend arrangements, i work out. If they need a doctors appointment I take them. Dp is great support and would happily do more, but I am their mother.
When women are the main wage earner, they very rarely check out of being a decent partner and parenting their kids.
When men do, more often than not its because they choose to.
I really don't think you can rely on this man to support you doing this. Which makes it a bad idea, in my opinion.