Maybe try a "home holiday" for a set amount of time?
- toast, baked beans, jaffles, pancakes etc for dinners. Paper plates if needed, minimal prep and clean up
- only wash kids and your clothes
- shove all toys at end of each day into boxes etc, don't sort, just basic tidy to pop them out the way so nobody trips
- on the day you have no kids home, organise an activity for you and stick to it. Even half a day. Gym class, coffee, walk outdoors, catch up with another mum friend, hairdresser, nails? I call this "sanity time". It will make a difference to your week
All the best.