Review Question - QID 210668

A 47-year-old man presents to his primary care physician for headaches. The patient states that he typically has headaches in the morning that improve as the day progresses. Review of systems reveals that he also experiences trouble focusing on tasks at work and has daytime fatigue. The patient drinks 2 to 3 alcoholic beverages daily and smokes 1 to 2 cigarettes per day. His past medical history includes diabetes, hypertension, and hypercholesterolemia. His current medications include insulin, metformin, metoprolol, aspirin, and atorvastatin. His temperature is 98.7°F (37.1°C), blood pressure is 157/98 mmHg, pulse is 90/min, respirations are 15/min, and oxygen saturation is 99% on room air. Physical exam reveals a fatigued-appearing obese man with a BMI of 37 kg/m^2. Which of the following is the most appropriate initial step in management?