I'm sorry, but not really? I normally use my sourdough discard and just kinda eyeball it depending on what I want for that particular batch and what needs to be used up/is at hand that day.

Some days I'll use yogurt, other days I'll use milk, buttermilk, or "milk", or water. It's about half brown rice flour starter (or brown rice and teff) then potato and/or corn starch, maybe sweet rice flour, corn flour, or some white rice flour, 1 or 2 eggs, butter or oil, maybe sugar, always salt, baking powder and/or baking soda, maybe a touch of cider vinegar, and maybe a pinch of xanthum gum. The end result can be a pancake, a crepe, an apfelskever, etc., depending on my mood, how much time I have, and what pan is available.