A 52-year-old woman with long-standing hypertension and type 2 diabetes is found to have an eGFR of 52 mL/min/1.73 m² and albumin:creatinine ratio (ACR) of 25 mg/mmol on two occasions. Blood pressure is 138/82 mmHg on perindopril and amlodipine. According to CKD primary care guidance, which management strategy is most appropriate to slow progression of her kidney disease?