Great and simple advice.

In my experience a meeting should be called after the organiser wrote down in black on white “why am I calling it?”, “am I ready to send participants, at the least two weeks in advance, the material to prepare the meeting itself”, “about what do I want people, and me, to make-take decisions”.

This is a way to cut them short in time. It should also useful to ask people to come to the meeting without docs or keynote to be presented but with questions and comments on how to make things better and what to leave out after they have read the docs and keynotes the meetings is about.

Too many meetings are created on calendars like the week days and so repeated X times a year… this way the first week of the month will always see a marketing meeting, a financial meeting, a board meeting, etc. etc. just because they have been pre-scheduled and sometimes not because with a purpose.

So yes shorten them and sometimes don’t do them just because on a calendar.