A 34-year-old man comes with 9-year history of asthma, on a combination inhaled corticosteroid and long-acting beta agonist inhaler as needed with excellent inhaler technique. He has been using his inhaler about 3 times per week. His asthma symptoms wake him from sleep approximately once every week. Vital signs are normal without wheezing. Which of the following is the most appropriate next step in management of this patient?