Exactly. I stretch and toss a guy an inning before I even think about putting him in the game. See how my starter does his first batter of the next inning. If he gives up a hit, or walk I then warm up that same pitcher and it takes one batter and a mound visit plus maybe some warm up pitches on the mound when he enters the game (which I do anyway) to get him fully warm.
If my pitcher is doing well....I check him again and if he is almost or fully warm..."ready and waiting" is my next toggle for him.