We had a very similar 24w last year, he was in HFO for several weeks and there are some reports of using either HFJV (which we don’t have in Chile) or HFO with low rates. We used HFO+VG with a target of SpO2 of >80% (or at least to achieve a normal brain rSO2) and pCO2 65-70, using rates of 5-6 Hz to increase expiratory time. He needed dexamethasone and then hydrocortisone for weaning, diuretics for several weeks, and was discharged at 41-42 weeks of CGA with O2 0,1 lpm. Really bad chest xray though, some big bullae.