??When should I do the last defoliation ??

I always defoliate once before flower then once when I notice they have stopped stretching so around week 4 of flower to open up the light to the bud sites but I will only cut a leaf as a last resort usually you can just tuck it under the net or move it somewhere I try my hardest not to defoliate as she needs every fan to bulk up them buds for you :) So after that I wont touch her again until the 7th week of flower then I will have the last defoliation at week 9 of flower and then leave her until she finishes :) I run a similar set up to you too my friend i use the SOG style rather than SCrog but have a butchers at my diaries maybe get a few tips who knows anyhow my pm is always open if you have any more questions don't hesitate to message and I will do my best to give advice and remedies for problems :) Happy growing great lookin canopy by the way :) I would have a large defoliation just 3 days before you plan on switching the lights :)