A cooldown window of at least 7 to 10 days that should elapse before making optimization changes to a new or newly-adjusted Amazon PPC Auction Model campaign. Daily sales and click counts are too noisy for reliable decisions; waiting out the window between rounds of bid, keyword, or Amazon Negative Keywords changes lets enough data accumulate to distinguish signal from noise. Pairs with the Leading Actions vs. Lagging Metrics (PPC Diagnosis Framework) diagnostic order and the Excel-Based PPC Report Color-Coding Workflow review ritual — the cooldown defines when to run that review, not just how.