You don't still need to cook for him. Explain that on the days he is parenting the kids, you will be getting respite, which a single parent needs, and you will be leaving the house.
That is only workable short-term; he needs to parent the kids outside of your space in a long-term plan that you agree to. If you and he cannot negotiate agreements let him know that a mediator may be needed.
You don't have to argue or feel resentful for what he expects, but you do need to establish what you are will to accept and what you aren't. He fathered two kids, he is responsible for parenting them part of the time, make an agreement that provides for that.
Let him know, if this every day in your house iPad time is already in effect, that it is not a workable long term solution, and ask for a time to meet in private to come up with a fair agreement.
My lawyer and my IC have both seen my H's plan and think it is ridiculous. I will not be signing a separation agreement that ratifies the status quo. But for me, right now, I only get respite when I have a reason to need it and ask H if he's available to "help." And it is not livable. Tell your H that separated parents parent separately, and he is responsible for homework and dinner when he is parenting them. You will be soaking in the tub/taking a night class/jogging.
Be respectful, listen to him, but ask questions too. Ask him if he believes it is fair for you to parent 100% while he is a daily guest in the house, because you feel taken advantage of under that plan. Ask him when (not if) he will begin taking the kids to his place instead of visiting your place.
Adinva 51, S20, S18 M24 total 6/15/11-12/1/12 From IDLY to H moving out 9/15/15-3/7/17 From negotiating SA to final D at age 50 5/8/17-now: New relationship with an old friend __ Happiness is a warm puppy.