A 28-year-old woman with a 3-year history of episodic wheeze and breathlessness presents for pulmonary function testing. Her baseline spirometry shows FEV1/FVC ratio of 0.68 (obstructive pattern). After administration of inhaled salbutamol, her FEV1 increases from 2.1 L to 2.5 L. The finding marked **A** in the diagram (Post-Bronchodilator FEV1 Increase ≥12% AND ≥200 mL — Significant Reversibility) is demonstrated. Which of the following is the most appropriate next step in her management according to GINA 2024 guidelines?