when to flip scrog to 12/12 screen filling up

just wondering if this blueberry haze lady is ready to flip to 12/12. im running a 200w cfl 24/0 for veg and a 250w hps for flower. id say this clone is 3 weeks old in a 7gal smartpot with amended soil. the screen is 24"x26". im just afraid of it over running the screen. heres some pics. +rep for any positive responses ty all.

3 weeks? If you want to fill the screen I would suggest another 2-3 weeks, keep the stretch in mind. Or you could flip now, and while it's stretching weave it in the screen more. Good job, I like you're setup

I only grow scrog. I would flip it now. Any haze influence is gonna stretch and fill that screen

Since your in soil, i personally would wait till that screen is damn near full... You can tell by the node spacing that shes not going to stretch too bad.. How much height do you have to work with?
To me thats one mistake i see new scroggers do all the time - flip too early and not get a full screen...