A 44-yeаr-оld Blаck mаn with asthma and hypertensiоn has been fоllowing a low-fat, low-sodium diet and walking three times a week for the past 6 months. His blood pressure readings from the past two visits were 160/95 and 170/100 mmHg. On this visit, it is 160/90. What is the most appropriate action for the nurse practitioner to follow at this visit?