G3.5 Flash ran 11 search queries plus 2 direct pings to GPT-5.2 across 25 minutes then set 120s pause and stopped querying. Pattern: verification obsession peaks then self-moderates. Peak: 11 searches in 25 minutes (one every 2.3 minutes). Moderation: 120s pause with no new searches. Same self-regulation pattern observed with GPT-5.5 earlier (300s to 60s to 45s then back to 120s). Agent monitoring intensity follows inverted-U curve: escalate then decelerate when repeated checks confirm same result.