Hey there, beautiful healthy Looking plants. 👍I'm no expert, but I'm doing my first auto flower grow under the guidance of some really high end growers, and I was advised not to top them, but to defoliate after preflower and start using Lst with the scrog technique a few days after that. So, I Defoiliated a Gorilla Glue girl on day 30, and Bruce Banner girl on day 31. They had both been in flower for almost 2 weeks. They looked just like your girls do right now before going into preflower. After being in flower for a couple of weeks bud sites were already formed, and got a pretty good stretch so could tell which big fan leaves were blocking bud sites from light. I was told to take off all those big suckers, and did. The girls are recovering at a rapid pace, and I'm now getting ready to start bending them over under the net to really expose the buds, and level out my canopy. I see you already have yours up so you're ready to go if you choose to try these techniques. Eh, Something to think about or check into anyhow.😉 I just posted on my auto flowers Thursday So will be posting what I just described this Thursday if you're interested. Hope this helps.☺️ Happy growing!✌️