How do you turn off the "overwhelm" when you are finally off duty?

I am sitting here completely overwhelmed tonight just thinking about the sheer volume of invisible work I have to manage tomorrow.

It feels like being the default parent means you can never actually turn your brain off. Even when tasks are delegated, I am still the one who has to notice it needs doing, assign it, and follow up. The mental load living rent-free in my head is honestly heavier than the physical work.

I just feel totally isolated in this sometimes. Does anyone have a way to actually offload this mental baggage so it stops keeping you up at night?