Okay, just had one hour long videoconferencing where I drank strong coffee 10 minutes beforehand stood the whole time and sipped water.

Didn't doze, but boy I felt I had heavy eyelids though the coffee helped somewhat with alertness levels. High anxiety and definitely jittery. Not to mention a full bladder.

Maybe it's sleep problems since I got 6 hours last night. :/

There's another videoconferencing later today expected to last about 2 hours. Will see how it goes. :/