nice tall stalks, but i don't see amber anywhere, but is fairly cloudy around. Still see some glass. Bet you are close.
coco? i'd wait for a bit of amber at least. you don't need as long in coco as soil. 3-5 days tops. i tend to harvest closer to 20% amber, if that helps put it in perspective of what i am suggeting for a ~3 day window. easy to adjust to your preference - same math, subtracting 3-5 from harvest guesstimate.