I reflected on this quite a bit this morning (unrelated to this thread specifically) and I think it's the attachment to outcomes and tasks that makes this super stressful to me.

I think a lot of the looming schedule stress can be quelled if I can remove all the thinking about the steps of the tasks and the tasks that need to be complete are given actually realistic times for completion (which means doing way, way less than I would normally because everything takes me so much longer now).

In the past I would wake up and go to the gym before work and would basically throw myself out of the door. I knew how long the gym would take (because I was either training for a race and had set durations of run/swim or set weigh routines) and would then go to work. After work I either had another workout or I would work on a volunteer commitment that had extremely specific steps and timeframes or get my stuff ready for the next day and spend time with my partner. It didn't always go perfectly, but I was way less stressed about my schedule being packed than I am now. I think a lot of that was due to how dialed in and consistent everything was, so there was no real worry about missing a step or being late. This point of my life had some struggles, but not nearly as bad as right now where there is so much less structure so any attempt at structure feels like a cage.

Not sure this would work for you, but sharing because I think that I am realizing that what felt like something that should be super stressful really wasn't - and probably because it was so low demand as everything was planned out.