Harvest window? This is my 3rd harvest so Im still learning

judging by the pistils, its too soon, lots of white hairs still and it doesn't look like this is from a second flush of growth. Hard to see in fine details the trichomes but most look clear still, some are starting to go milky. looking at your diary, the plant looks healthy overall and it doesn't seem like its starting to fade yet either. I'd give it 7 or 8 weeks for flowering, so 2 - 3 weeks before you can get the scissors out imo.

Harvest when most trichomes are milky and about 10–20% are amber. Clear → Too early Milky → Peak potency Amber → More relaxing effect From what I can see, the trichomes are little milky, so you should do a root flush soon. There’s still a bit of time left before harvest since most of them are transparent. Ideally, most should be milky, with about 20% being mature/amber.

It looks like it can go for 1-2 weeks more. Some pistils are still very light and trichomes seem to be mostly clear. Try some different, maybe less lighting when taking the photos so you get better contrast. Might be easier to spot the individual trichome heads. Make sure to check all buds, not just the top ones. Concentrate on the trichomes on the buds, not the sugar leaves. Don't be affraid to do anything wrong. There will be another harvest, and maybe you like it the way it turns out if you harvest earlier. Just try and you will learn. You are very close with this beauty. Good luck on your harvest! 😇

There appears to be significant white pistils left on the bud, and an abundance of clear trichomes (my experience level about with yours!). Depending on your lighting I would say at least week or two.