So you're basically a machine that spends their time working and taking care of your children? This feels like a one-way ticket to a burnout.
Super thoughtful consistent schedule with little room for anything else is my tradeoff if I want to maintain high quantity of high quality output with my business. And TBH, it lasts for 15-18 years at most.
I didn’t mention the weekends - those are more of a free for all. Lots of family time, work sneaks in. It’s a lot more thinking than working though.
For example nurses (both male and female) during WWI - worked themselves to mental breakdowns because there was endless stream of properly suffering people to help or even save. One can't have much more noble goal. Yet hard burnouts kept happening.
I don't want to sound all gloomy since I know nothing about your situation. Just listen to your body and mind, it keeps telling things in subtle ways, not a good idea to ignore that.