Yeah, bummer. It's hard to know if it's the steep drops causing rebound, or not enough duration, or both. I'd probably still shoot a little bit lower doses just to get away from the steep drops. It might have the nadirs a little higher, but as long as they are still in the blues I would probably just ride with that, and then I would probably switch to a different insulin. You want the greens to promote pancreas healing, but then the steep drops defeat the process, so it's kind of a vicious circle (or something, I think that's the wrong metaphor!)