The school day taken apart into seven pieces, one page each: mornings, getting dressed, getting there, the classroom, lunch and break, homework, and evenings and sleep. Fill in one a night, in any order, starting with the one that hurts most.
Also inside: a launch-pad setup for the square metre by the door, a one-page handover for the class teacher, four scripts for asking the school for what you need, two pages your child fills in themselves, and a first-week log.
One idea from inside it: ask the office for ten minutes in the empty building before term starts, and photograph the route as you walk it. Most schools say yes when you ask early.