Hey buddy, the best way to know this is to use a microscope or a magnifying glass to see if the trichomes are 90% milky and 10% amber. If that's the case, you can start your flushing and then harvest. Bye!
Your plant looks close to harvest and gorgeous so don't worry. But trim those leaves off, discard them. I would blast the plants with a hose or shower before hanging them to dry. Maybe do some bud washing too too get rid of excess bugs or webs or eggs. Don't worry about neem oil this close to the end. It may taint the flowers and is mainly used to make a surface they can't feed on so would be pointless
Spider mites or thrips, you can use some foliar pest control; if it's just a few leaves, I would cut them off. Otherwise, use foliar pest control until harvest, which isn't far off.
Tricom Here it is! I think it's good, they have reached maturity... I'm putting them in complete darkness for 48 hours... easy-to-grow variety, generally resistant (to pests, excess, deficiencies, and pH)... with a good yield, ideal for novice growers... very, very strong skunk smell with orange: tangerine: and heavy buds... honestly, the HGL Rspec 100W really delivers, Hezi also makes great products...