2nd May 2024

A 52-year-old woman with a history of type 2 diabetes presents to the clinic for a routine follow-up.

A 52-year-old woman with a history of type 2 diabetes presents to the clinic for a routine follow-up. She has been managing her diabetes with metformin 1000 mg twice daily and lifestyle modifications. However, her recent HbA1c levels have been steadily rising, now recorded at 8.2% (66 mmol/mol). She denies any hypoglycemic episodes. Her blood pressure is 132/80 mmHg, and her BMI is 29 kg/m². She follows a balanced diet and walks for 30 minutes daily.

Which is the most appropriate management step to optimise her glycemic control?