Congrats on the 8 lbs!
In addition to all the good advice above, I'd add that I found keeping an eye on the amount of potassium I was consuming helped a lot. I've read articles that say, because of the drop in water weight, lack of potassium is one of the things that causes the tiredness, headaches, and other symptoms.
What's high in potassium? Chard, kale, spinach, brussel sprouts, broccoli, beans (especially white beans) -- lots of good things. Meats and dairy have some too, but not as much as vegetables. Everyone is different, of course, but I've found when I sink below 2000 mgs of potassium in a day, I get shaky.
(I'm not a health professional and this is not medical advice, of course, but as long as you wash them thoroughly before ingesting, I can't believe eating vegetables will hurt you
)