The Pre-Commitment Script

Set expectations before the screen turns on: two episodes, then something else. Ask what they want to do afterward, so the transition has a map and a next step.

The key phrase when time is up: "I know it's hard to stop. The show is really exciting. AND it's time to turn it off now." Validate first, then hold the boundary. Do not argue about the rule. Do not negotiate. Empathize and stand firm. This combination is more effective than either alone.