Has anyone noticed that after drinking kava for several days, you become lethargic and depressed? It seems this might be the case with me, but it could be just coincidental.
The key is moderation. Back in the day I drank a pound in 3-4 days the extreme lethargy would happen a lot, after. Over the last few years, specially with prices on the rise. I find a 1st wash throughout the morning (for me, your times will vary) and maybe a second wash after work is more than enough to stay rooted and relaxed all day long. The right kava helps, it is not a one type fits all, so maybe experiment with different types, dial in what suits you and don't go heavy on it or you can pay the price later.
I still occasionally go a bit heavy once or twice a month on weekends, but I go into it knowing full well I have a day or two to recover and be ready by Monday. Again, depends on your life, routine, etc.
Stay hydrated, specially on heavy days. Water is not enough, keep some coconut water, electrolyte drink mix or Pedialyte handy for those heavy times.