First grow, Sour D by FastBuds!

If your not having problems controlling humidity or getting wet spots on the leaves then leave her alone. Otherwise if you need to defol then take a few bigger leaves nearer the centre of the plant.

Why defoliate at all??? It is not a necessary "technique" when growing cannabis and is best avoided at all costs, unless there are massive problems controlling humidity during flowering. ALL of the plants energy to grow and thrive is made by/in the leaves. Less leaves = less energy being made = less potential growth. Just because everyone else is doing it, does not make it right.........they are allowed to be wrong! The buds are relying on the leaves to make the energy that they need to grow.............less leaves......smaller buds.

only when its needed is when you shouls defoliate ie when there are issues with light penetration or air movement otherwise leave those leaves alone

You're probably near the beginning of your window. A better look at the trichomes will tell you for sure. Pretty plants, great job.

I wrote this on another question but it applies all the same here. see the pasted reply below, Also breeder times can vary a lot. so grain of salt with that information, especially on autos: If your worried about rot keep up the airflow. Are these trichomes from the buds?? and if yes, where on the plant? The top most buds will ripen faster then the bottom ones and only trichomes on the buds should be looked at vs sugar leaves with regards to trichome ripeness. Judge your harvest window buy a few things. Trichome colours. Bud density and Pistils dry back. Ideally aorund 80% of the pistils have dried back, the buds and nice and dense and the plant is drinking less water now and not growing all that much, The trichomes are mostly milky with some amber in the mix. I like mine about 10% or less amber. The colour is degradation of cannaboids. more amber, more THC getting turned into CBN. Even cloudy has some degradation. You may also notice the plant is fading in the leaves as well. When looking at your plants in the diary I'd say another week or two. But even if you wanted to chop now. you would still be happy with the result of a the buds after a nice cure. Good looking plants you did well on this. Good Luck!