A PMHNP in an outpatient clinic treats a 38-year-old woman diagnosed with major depressive disorder who has been on sertraline 100 mg daily for 10 weeks. The patient reports feeling "about the same" and denies suicidal ideation. Her PHQ-9 score today is 14, down from 19 at treatment initiation but unchanged over the last three consecutive visits. The PMHNP reviews the clinic's measurement-based care protocol, which specifies that a less than 50% reduction in PHQ-9 score by week 8 constitutes inadequate response. Which of the following best reflects the application of measurement-based care principles in this scenario?