A 80-year-old woman in a care home has type 2 diabetes (HbA1c 48 mmol/mol), hypertension, and osteoarthritis. She is on Gliclazide 40 mg OD and Metformin 500 mg BD. She has two episodes of hypoglycaemia in the past month (capillary glucose 2.8 and 3.1 mmol/L) occurring before lunch. According to STOPP/START criteria and best practice, what is the MOST appropriate action?