It is pretty much impossible to control what Google does. However, we often try to control how we respond to the changes. In this regard, we make it a habit to consistently research and keep an eye out for any potential changes. We also avoid reacting too quickly even when our rankings drop. Whenever Google rolls out new changes, sometimes the rankings fluctuate for a short period of a few days and then come back up. This happens because there are times when Google tries out a new change that did not work as expected and ends up reverting to before their update.