Why this one is different
A wrong size, a missed reorder, an inconsistent replacement — all of those are recoverable, quietly, one person at a time. A rollout is not. Everybody changes on the same day, in front of each other and in front of patients, and whatever is missing is missing in public.
That changes what is worth worrying about. The garments are rarely the problem; they were chosen carefully and nobody rolls out a range they have not seen. What causes trouble is sequence — the things that had to happen in a particular order, where one of them was left until the step that depended on it had already started.
So the work is not choosing the garments. It is deciding what has to be settled before anything else can start.