Mr MS is a 65-year-old man with type 2 diabetes and mild intellectual disability who lives with his mother. He is treated with metformin 1 g b.d., Gliclazide MR 60mg b.d. and insulin glargine 12 units nocte. HbA1c was 5.5%. Flash glucose monitoring was applied for two weeks. The image demonstrates his Ambulatory Glucose Profile with frequent and severe hypoglycaemia.

Based on these data, how would you adjust his medications?