thanks for all the advice and encouragement so far.
here are some updates.

(almost can transport these outdoors!... just 1.5 months!)

one of them is very small and very sad. I think that's because the pot is really strange, and I have a bowl underneath catching water, however sometimes this bowl has quite a bit of water (which I didn't know until now), and some roots were stretching down into it, in the meantime exposing themselves to air.. plus she's kinda overgrown by the other two, and the pot is much smaller.. so all these elements are factors in the sadness. I plan to keep her around and bring her back to good status when I move them outdoors.

In one pic I close-up to see if any of you can judge the sex, mind giving a hand with that?

anyway, things are going great, these things are SUPER picky about nutes though!

also, any advice on how to bring my big girl back around? she's the droopy one. I can't figure out why I've flushed a few times, and now she's on the same treatment as my other girl.