Hey friend,
Great job on the manifolding so far. As for the flip to flowering, have you gotten as many colas as you want out of it so far? I see many people stick to about 8...
As soon as you have the right amount of colas for you and your grow space you can flip. You can also allow the plants to grow a bit more leaves height etc., but flip them close to 6 inch tall.
You can use a tomato cage ring to put in container and help keep a nice even canopy by tucking them into the ring.
Enjoy the rest of the grow.✌️