Need to Play “Catch Up”

I’ve got 2 different strains.. Blueberry by seedsman 23 days from germ and just topped the 5th node. Wedding Cake by Barney Farm seeds that’s 15 days old and currently growing its 3rd node. Any ideas on how I can play catch up and get the Wedding cake to catch up in size? I was thinking of just topping the Blueberry to stunt growth a little and just doing LST on the Wedding Cake all before throwing it under a Scrog. Ideally I would like them to be around the same size before I flip to 12/12 and begin the flowering process at the same time . Let me know what you think!

your only course of action is pruning/lst/hst/bending or tieing the branches down to the side of the pot. theres no magic formula to let it catch up by growth alone. one plant will be larger then the other.

you could allways take the larger plant out from under the light for a few extra hours a day, the extra dark period will pushit togrow faster

oops, the smaller plant out

Topping will slow them down for a bit, but if you're scrogging then you should just train them.

High stress train it. Squeeze or crack the main stem and let it lay over. Heres video. Start @19mins to see what im saying.