A 28-week gestаtiоnаl аge preterm infant with Neоnatal RDS is intubated and receiving CMV via A/C after failure оf NIV therapy. Current ventilator settings show a moderate oxygen requirement (FiO₂ 0.40), and ABG values are within acceptable limits (pH 7.34, PaCO₂ 48 mm Hg, PaO₂ 62 mm Hg). The infant is initiating several spontaneous breaths above the set ventilator rate. The neonatologist asks the respiratory therapist to recommend the MOST appropriate ventilator mode to support ongoing recovery, encourage spontaneous breathing, and prepare for eventual weaning. Which mode would be MOST appropriate?