I went through extreme zoom overload as a senior leader at a large organization. I found myself on upwards of 16 Zooms a day. It was exhausting and I felt not very productive. I found most people were multi-tasking and just waiting for their turn to talk. There were also people who just hid on meetings all day every day instead of producing work. I've since switched entirely to async audio messages. You get far more context and discussion than text based chat. Teams/slack already have audio messaging built-in. Why wait until everyone is on a meeting to discuss something. Instead just start talking and people will respond when they can. I've reduced my synchronous meetings to a couple a week. Disclaimer: I built Airwave a push to talk app for frontline workers and use that exclusively.
