How long left

Looks quite frosty... cloudy.. I'd say you are at or near beginning of harvest window based solely on these pictures (i.e. inadequate info, not criticism.. you will always have more info at your fingertips that what you can display here). Multiple locales should be scoped to determine how ripe it is. If that is all from the top colas, you may have more time to go. Top colas ripen first... soething in direct and intense light is more likely to show earlier degradation of THCa (this is what happens when you see amber.. degradated molecule has a new color, because at least some of that thca is no longer thca and will impact your brain differently too... breaks into cba? i forget exactly, but it's a less psychoactive molecule with propensity for making ppl sleepy than decarboxylated THCa). What kind of buzz do you like? Different folks, different strokes... so, it's hard to say "now is the time". I'd read a bit on what 10% amber vs 60+% amber is... more amber = more couchlock. But, reading many varied opinions will put it in right perspective... In the end, you will still have a bit of trial and error to figure out what you prefer. Don't rely on that googled info. Try it for yourself at both ends and middle... anywhere else your heart desires. I am not a fan of couchlock or something i fall asleep the moment after the buzz ebbs a tiny bit. If you get a little paranoid from pot, or potentially so, you probably want a later harvest-window date, i'd guess. Maybe, you want a batch specifically for bedtime? Then, a late window harvest might also be a good idea. So much of this is personal opinion... so read up... get a ballpark idea of it... then you'll only become more confident after you've done it a few times. It's a bit worrisome at first.