A 72-year-old woman with acute respiratory distress syndrome (ARDS) secondary to pneumonia is intubated and sedated. She is currently on pressure-controlled ventilation (PCV) with an inspiratory pressure of 20 cm H₂O above PEEP, PEEP 12 cm H₂O, rate 16/min, and FiO₂ 0.8. Current tidal volumes are 6.5 mL/kg of predicted body weight. ABG shows pH 7.32, PaCO₂ 52 mmHg, PaO₂ 95 mmHg. Chest X-ray shows bilateral infiltrates consistent with ARDS. The team is considering a mode change to improve ventilation and reduce driving pressure. Which mode would be most beneficial for this patient?