I have the same problem as you do, not being able to keep same energy levels throughout the day. I realized my diet was too carb heavy (white rice, 2x a day usu

I have the same problem as you do, not being able to keep same energy levels throughout the day. I realized my diet was too carb heavy (white rice, 2x a day usually) and I was able to somewhat counter that by high protein snacks (handful of almonds) between meals. I got the idea from a book called "Why isn't my brain working?" by Dr. Datis Kharrazian. There is a chapter in the book detailing some dietary changes that a person should make depending on their blood sugar levels and other factors. I suggest you take a look at this book for some ideas on approaching this problem via diet.