Fluids are the heaviest. Perhaps carry just water and bring powdered ingredients to mix needed drinks.
I assume you're suggesting that having Powerade or Propel with two bottles of water is too much. While I like the security of carrying extra water, I understand the weight issue and will consider it.
There are backpacks that don't look prepper at all. Maybe something in Hello Kitty.
Wearing a backpack, even a Hello Kitty one, would attract attention if no one else in the area is wearing one.
Jeanette Isabelle