I think the easiest way to time right now is to use charts of individual stocks that are crashing and see where they are in that crashing phase.
Until you reach a point like baba, which is in the final stage, lifeless and mostly flat, there is no bottom.
BABA is the closest to a true bottom of anything I can seen.
Here's adobe vs the dot com bubble on the nasdaq for reference. You're going to see everything fall THAT much.
The entire bubbles will be reduced to a pile of nothing. I promise.