A behavior analyst is working with an 11-year-old client who has complex verbal language skills. The client currently works for 10 minutes at a time to earn a 10-minute break, during which he typically chooses to play video games. The analyst would like to increase the duration of the client's work sessions. What procedure should the analyst use to ensure a smooth transition to a longer work interval?

1. Use schedule thinning to increase the duration of work time to 30-minute intervals
2. Use schedule thinning to increase the duration of work time to 15-minute intervals and clearly communicate the new rule prior to implementation
3. Decrease the client's break time from 10 minutes to 5 minutes
4. Do not communicate the new rule, but set the timer for 15 minutes at the beginning of the next work session