Q. A 36-year-old male patient with a family history of diabetes presents to the medical outpatient department for an annual check-up. He reports excessive thirst, frequent urination, and unexplained weight loss over the last few months. His BMI is 28. On physical examination, there is no evidence of acanthosis nigricans or other skin changes. Laboratory investigations show a fasting blood glucose level of 145 mg/dL, HbA1c of 8.2%, and normal thyroid function tests. What is the most appropriate next step in the management of this patient?