NL harvest question

Im a first time grower and I started some Northern Lights seeds at the begining of march. Due to males and death I only ended up with one nice healthy female. I have it under a 400w hps and it has grown into a beautiful thing! I switched the lights back to 12/12 on april 17. It only took about 7 days for her big pistils to come out. So I started counting the days from that point on, and its been 59 days today. Now her buds are thick and huge with about 60% of her hairs brown. Looking at the trichomes though, from what I can see, all the "mushroom" heads are still clear. Also, most of the big fan leaves have yellowed or fallen off. I want to know if the trichomes will eventually turn amber and when. I would have thought some of them would have by now. Im afraid of not picking her when shes ripe and letting her go too far. Is this possible? Thanks in advance for any info!!
p.s.- i tried taking some pictures but the camera is messed up!!

Looking at the trichomes though, from what I can see, all the "mushroom" heads are still clear. Also, most of the big fan leaves have yellowed or fallen off.
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hi bud gd choice of strain i luv nl nuthing quite like it can i ask wat magnifaication ya scope has i used to think 30x was enuff till i looked through a 100x mag and seen shite loads of flattened amber crystals under the cloudy 1s which i really couldnt c wit the 30x??

start flush now with water mollasses for another 10-15 days you should see the cloudy and amber trich by then

Using a cheap jewelers loop 30x. Also, I was told that some strains dont amber as much, but from your response, I assume you are familiar with the NL strain.

only smoking it never grown, but call it coincedence i spent some time looking at the diff seedbanks selling it last nite as i gunna grow it next time, unless my b cheese is soooo nice i decide to go again. if its pur nl they say 7-8 wk flower if its cross then up to 10. i asssumed u had alredy started flush as u said the fan leaves had yellowed off? i heard that bout trichs as well m8, but im sure thats a common excuse to cut em down early itchy scissor fingers does the pant look finished to you?? any white hairs on tips of buds is usually agd sign that they not ready/ can go longer. yield can double in last 2 weeks so cutting early is a big sacrifice nl is also pure indica so i wud imagine amber trichs are gunna appear at ripeness m8 its always a killer waitin innit lol