A 55-year-old man with type 2 diabetes and hypertension is found to have an eGFR of 52 mL/min/1.73m2 on routine blood tests. This is a new finding, his eGFR was >60 mL/min/1.73m2 six months ago. His urine ACR is 35 mg/mmol. His blood pressure is 145/90 mmHg despite taking ramipril 10mg OD. What is the most appropriate next step in managing his kidney disease and hypertension according to NICE NG203?