Any tips for getting a second wind after lunchtime/in the afternoon?

Same for me tbh when I was a wagie. Now I don't wake up to an alarm clock but wake up most days at the same time as I did before. tbh, a bad night sleep is the worst. I think you've mentioned insomnia, and that's an energy drain. Workouts for me helped a lot but I had to get a good night sleep or my workout would deplete my energy.

eta: oh, also I take vitamins every day. I use Solarray brand.