Right... I was thinking the same. If the meetings are too frequent, we might not have enough time to investigate in between... but any rarer than that could be risky too.

[ Since the information they gather might just... stop being relevant, or have escalated already by the time they actually discuss it. ]

I suppose we could go with monthly, but make exceptions if anything urgent happens and it can't wait. In cases like those, we could call an additional, emergency meeting off-schedule.