@dpayton
The first couple of months I made up my own electrolytes using this recipe which the WHO published.

1 litre of water (A little more than a quart)
2 level tablespoons sugar
1/2 level teaspoon of salt
You could make half a recipe with a pint of water.

I then moved onto the Liquid IV version that was sugar-free. They both work just as well.

You can get started right away with the first recipe.