Take an AI as needed. If water retention gets out of control or other higher estrogenic sides then add it in, and honestly just jumping back in and going to a dose where you require an AI would be too much in my opinion, start lower.
I've said this quite a bit I feel lol BUT estrogen is a very crucial part when it comes to growing - we want to be able to maximize the amount of estrogen we can handle. Most guys take AI's unnecessarily and drive their estrogen too low without realizing, thus limiting their ability to grow. So I'd certainly have it on hand but use it when necessary.