The Silent Churn: How do you catch cancellations before they happen?

The users who cancel with an angry paragraph are actually a gift at least you know what went wrong. It's the silent cancellers the ones who quietly hit downgrade after weeks of zero login activity that keep me up at night.

Sending automated exit surveys feels useless because response rates are near zero. By the time they cancel, their mind has been made up for weeks.

For founders tracking deep product analytics: what early-warning behavioral triggers do you look at before a user hits cancel, and how do you intervene before it's too late?