Seems like all the phenos responded well to topping.
Most new tops are between 1-2 inches so they need just a bit longer before flipping I think.
Holding off on nutrients seems to have been a good idea, no further leaf tip curling or burnt tips. Feeding only PowerSi and using Recharge this week in prep for Flower.
I also took 4 cuttings of each plant for clones. (After photographs)