I personally just go back to the exercises like this when I stray from them. My brain remembers enough from learning how to do them seven months ago. Even if I backtracked, it's easier to get on track. Even if you can't do the exercises all the time or always see the need for them, when you do, there is nothing wrong with going back and giving it a new whirl. The effects from such exercises is cumulative over the years. And as you get smarter and smarter, year after year, it just gets better and easier to understand what makes you personally feel better.