If you are spending the first 20 minutes of a one-hour meeting, what is the point of your meeting?
You aren’t ready to have that meeting.
Not probably, not maybe, not kinda sorta.
You’re not ready.
Figure out the point of the meeting, explain it clearly, concisely, in under 2 minutes – use the rest of the time to address the point.
Not to figure out what the point is.