The most expensive quarter in the hold period is the one everyone treats as a honeymoon. In the first hundred days after close, the leadership team is watching for signals: what gets measured, what gets escalated, what a board actually asks about.
Install the operating cadence now — goals, reviews, decisions, accountability — and the plan runs on rails the sponsor can inspect. Wait two quarters, and the same installation becomes a repair: slower, costlier, and carried out under scrutiny.
The teams that hit month-twelve numbers are rarely the ones that worked hardest. They are the ones that decided, early, how the work would be run.