1st ScRog, uncertainty of timing ?

From my understanding, general rule of thumb is to flip when your net is about 80% full.

Hi mate, you can flip whenever you are ready. Bare in mind they can double or triple in hight during stretch. Personally I'd probably start again with the scrog as the leaves are going to struggle to turn as they are going to just grow into the net. The net isnt helping control and form the plant, it's just preventing it form getting taller. It looks like you have enough room to let them grow higher. Hope this helps and good luck with your grow 🙂