Robertsanswered grow question 2 years ago I would wait till 2nd to 3rd week after light switch to begin defoliation and lollipop for final approach. Letting them get bigger will provide a bigger yield. Possibly lst all the bigger ones one way so they still fit. Let the little ones catch up a week or two. This will keep height down, and produce more. Strictly up to you though. Good luck🌱