First, one assumes that people water their plants... when those plants need to be watered, lol. If it works out to every three days, fine. If it's every two days, fine. As long as you don't wait too long to water a plant, or constantly water it too often. Personally, I (and, IMHO, cannabis plants) favor giving a plant an adequate amount of water when it needs it. But I've seen people mention giving not enough water, but doing so every single day... and they still seem to manage to harvest
something. Cannabis in general is a pretty resilient species.
As to (what appears to be) "every two days was maybe a little too soon, and will the girls be able to get enough of the nutrients before I'm taking them away?" You're taking away nutrients from your plants, lol? Aren't you... adding nutrients back in? I don't think that plants are like people - if I'm eating a nice steak, and you
attempt to take it away from me, it doesn't matter whether or not you've got a platter full of food to give me afterwards, because you'll still get at least a fork in the eye (and I might end up getting
serious about it
) for trying to grab my dead cow. But plants aren't like that. Hempy is just passive hydroponics, so you should be feeding with every watering (unless it's a "flush," and I won't go into that in this post). Assuming that you're watering to runoff, you're both adding in fresh nutrients and removing at least some portion of the waste products excreted by the roots and imbalanced nutrients caused by the plant uptaking more of some elements than others. It's comparable to changing the nutrient solution in a DWC reservoir, only not as "good." That's why a proper hempy-grown plant can outgrow a proper soil-grown one.
I'm just rambling. Take the above with a grain of salt and ask for corroborating (or dissenting, lol) opinions.