A 22-year-old woman reports that over the last 3 months she…

A 22-year-old woman reports that over the last 3 months she has had to use her short-acting beta-agonist rescue inhaler more frequently. In the last month she used it 4 times per week and woke up 3 times this month with asthma exacerbation.  After a normal respiratory exam today, your next step would be to: