A 52-year-old male from rural Maharashtra presents to the primary health centre with a 3-month history of progressive dyspnea and orthopnea. On examination, he has a blood pressure of 160/100 mmHg, heart rate 92/min, and bilateral ankle edema. Chest X-ray shows cardiomegaly and pulmonary congestion. ECG reveals left ventricular hypertrophy. The patient reports no prior screening or treatment for hypertension. According to NPCDCS guidelines, which of the following is the most appropriate next step in management at the PHC level?