I've been torn between responding, or letting it go. I don't want to...
In a sense, no, you are not wrong in watering every 3. If that's what they need and when they need it, that is what you do.
However, that being said, without giving up any "spoilers", I've dropped many hints through my few (it's all relative) posts. With that, I've already said too much.
Probably 2 here that can decipher this, but even if they did, more than likely they would "second guess" themselves, and be convinced otherwise.
Good luck.