I've been working with clients virtually for five years. With the sudden world wide shift to working virtually, many people are suffering with Zoom burnout and Zoom fatigue.
Here's a tip that can help everyone with losing focus, zoom burnout and zoom fatigue. When you are in speaker view, click on the 3 dots in the upper right hand corner of your picture. You'll see a drop down menu with the bottom option "Hide self view" - click on that and you will not see yourself anymore. Our entire lives, we have only seen the person or people that we are speaking with. Now we are asking our brains to work harder by trying to process this new neural pathway.
Also, make conscious choices to keep coming back to the present by focusing on your breath. You can think "I'm breathing in, I'm breathing out..."
I'd love to hear how these work for you. Good luck!