As little as possible. I make my cantrips do a lot of work and push my HPs with potions, short-rests, second-wind and the like. I am on an Eldritch Knight run at 3rd level right now and I think I may have camped twice...it's possible I've done it three times, but it doesn't feel like it. I don't trust that there's not a clock on the tadpole killing me.
