A 28-year-old male who has been taking paroxetine 40 mg daily for 2 years for major depressive disorder has been in sustained remission for over a year. After discussion with his PMHNP, both agree it is reasonable to attempt a supervised medication discontinuation. He reports that he previously tried to stop on his own by skipping doses for a week, which caused dizziness, electric shock-like sensations, irritability, nausea, and vivid dreams. Which of the following is the most appropriate approach to discontinuing paroxetine?