You still have a few weeks imo. You can always check ur trichomes under 40x magnification to see ripeness. That is the most concrete way to tell where ur plant is sitting maturity wise.
If trichome heads are clear they are unripe and will give u a headache. Cloudy white is peak thc, amber is slightly degrading thc levels but has a more narcotic effect. Most growers shoot for bulk majority cloudy white with a small percent of amber. Generally 10-30% depending how narcotic they like their smoke. This is a matter of opinion and I re iterate milky white is peak thc levels. I have another piece of advice for u my friend... cut back on ur nitrogen its hurting ur flowering process. Your buf leaves are very dark green and starting to get shiny. Next the tips will burn and ull have burnt leaves in your buds. Also too much nitrogen in flower promotes leafy buds. With higher leaf to flower ratios. Just helpful intended advice not trying to bash u. Happy growing and stay lit fam.