Hi,
your story and setting sounds quite good. We don't use the Drager, but we use the Accutronic "Fabian" with HFOV + VG and it works great - especially for ELBWI. To me personally, the settings are quite low and I would attempt to extubate the baby (but I don't know any other facts - just from your respirator settings). We never go above 15 Hz in our center (as far as I know), so I cannot help you with that answer .... but I would interpret it as a sign - if you thinking of more than 15 Hz --> extubate ;-)
But it is an very interesting question, maybe we get a good answer and lea