There's a particular kind of cognitive exhaustion that comes from life admin — the endless low-level labor of managing subscriptions, appointments, insurance, and logistics. For ADHD brains, it's particularly lethal.
Every unresolved life admin item becomes an open loop in working memory. ADHD brains carry 40–60 unresolved items at any given time. Each one consumes cognitive resources even when you're not actively thinking about it — draining the capacity available for your actual work.
Capture everything out of working memory. Batch admin tasks rather than handling them as they arise. Reduce your total obligation surface area by regularly eliminating commitments that no longer belong in your life.