How much electrolytes?

Just got my first shot yesterday, and so far, so good! A little dry mouth, but nothing else of concern.

I'm curious how often everyone is using electrolytes. I already drink about 120 oz of water a day and have always been pretty good about staying hydrated, so this isn't really an increase for me.

Should I be adding electrolytes every time I refill my water, or is once a day (one serving) enough? In the past, I've only used electrolytes if I'd been out in the sun all day or had one too many drinks the night before, so this is new for me.