Time to chop these ladies????

No where near ready looks like at least 4 or 5 weeks yet sorry they don't grow has quick has company's make out and the first 2 weeks flowering is just stretch so your about 4 weeks flowering now not 6 weeks and they be ready about 8 weeks flowering after the stretch probably ready beginning of August happy growing

Is your light really that close 15cm away is not far enough to make for any decent ppfd. Too close. But what everybody said. You have a ways to go get my friend. You want them pistils mostly Amber and curling back into your bud. Good luck..

no no no :) check back in 3 weeks as organoman said

I honestly don't think you're ready.... pistils haven't even started to turn brown yet and there's no way, with these pics, to get a good look at what's happening with the trichomes.... But in terms of when to harvest, it's going to completely depend on what YOU want from your smoke... if you harvest early, i.e., when the trichomes are milky and not turning amber, you'll get a more cerebral high from the smoke. If you harvest mid-way, when trichomes are about 30% amber, you'll get a balance of cerebral and body high... harvest late when the trichs are mostly amber, you'll have lost a lot of the THC and get more couch lock.... so it really DOES depend on what you want! Good luck!

Nowhere near ready, maybe another 3 weeks, perhaps more. Start thinking about harvesting when there are 98-99% brown pistils.