Hey Mary
Sorry no one got to Mikey's condo today. I think it was busy with some brand new members. But still...you have a question and it's important.
Usually you can tell when the bounce starts when numbers just start up. If they fire up within an hour, it might be big insulin poop out (BIPO) or it can also be BIPO and a bounce. When the bounce is clearing numbers start to come down but can wobble. This can go on for up to six cycles.
But, "generally" when you see the numbers come down as if they will clear but they don't come down into green, and then they pop back up (and sometimes they pop up really high like Mikey did today at PMPS), then you should be alert to that possibly being the "high before the break". Mikey gave you a perfect example today of starting to come down, then he popped way back up (a flag to me he was likely to clear tonight), and now he's headed down.