A 20-year-old male college sophomore is diagnosed with ADHD, predominantly inattentive presentation, after comprehensive evaluation including childhood history corroborated by his parents and neuropsychological testing. He has no psychiatric comorbidities, no substance use history, and no cardiac history. His BMI is 19 and his resting heart rate is 72. He reports significant difficulty with sustained attention during lectures, completing assignments, and organizing his academic workload. He failed two courses last semester and is on academic probation. He is motivated for treatment and asks about medication. Which initial treatment plan is most appropriate?