Hey supergroomer just stopping by on my way to xmas...
your girls look good, one thing to remember when growing under LED's is that they like to eat more cal/mag than normal so be sure to include that when you feed.
I'm a hydro grower so I'm not sure how you'd go about that in soil. But if you start to see your girls leaves yellowing up and they are too young to be harvested or for them to be heading to the end of their life cycle, try a foliar feed with the cal/mag and you should start to see some results in a couple of days at most.
Stay safe, stay medicated, and keep the greens green.
Merry Christmas