Need Experienced Help ASAP! w/ Pics

Ok im nearing my harvest i would assume probably within 2 weeks, and im starting to flush tomorrow but ive cut down on nutes a little bit, not too much though. A week ago this started, maybe a little earlier and it was nothing really until yesterday, now its actually spreading throughout all of the leaves that aren't directly on a node of pistils. Now all of these leaves are actually dying off, becoming COMPLETELY dead and brittle, while others are nearing that same fate, and my pistils are STILL not turning orange fast enough, do i flush once i see like 60% orange, or do i flush to try and meet that at the same day and predict wshen it will happen, cause this is my first ever grow so im clueless and paranoid about fucking up the most important stage.
Plant 1
Plant 2 (Phenotype purple so instead of orange im waiting for it to all go purps, going faster than plant 1)
plant 1, bud site with ALL white pistils, but looking VERY nice for CFLs
Plant 2, sexy little purps, same size cola and side branching as pic above, can see MUCH more maturity in pistils etc
Both (plant 2 left plant 1 right)
More dead leaves on plant 1, fuck i HATE THIS

btw ive checked my trichs like 2 days ago and they were just fully extended and all milky/clearish. I saw no amber at all in the trichs so i need some serious opinions on what i can do or if this leave dying is just the plant telling me to flush and that its nearing the end of its flowering cycle and therefore life... thanks

Some leaves shrivel and die at the end of the plants life cycle, unless your getting dark masses of leaves that are grey and almost slimy (this is bud rot) its natural. Just picks out the dry brown crackly leaves.

umm id sai u over watered it u suhdnt of flushed it yet its soo soon it still needs to grwo more u flush during last week of harevst not 2 weeks before..umm or the plant could just be tellin u its almost ready to be harvested ..i wouldnt worry too much tho bro theres alredy many buds on those plants even if u pulled now u would still get a good yield... i wud reccomend not watering it until the top of the soil in each plant is dry then water...check ur ph...and i wud stop using nutes soon....if u use them to close to harevst u will taste nd smell the nutrients in ur bud..happy smokin

Dude it looks all finished to me, you start flushing at about 30% of the pistils turning orange...how old exactly is your plant?....whats your humidity now?

...whatever dude, if you're gonna keep her going, feed her nutes up to 1 week before you harvest her, flush with molasses for the last week, get as much humidity out of your area as possible, you can even reduce the light time doewn to 10 on 14 off if you like during the last 10 days, crank it back up to 12/12 for the last 2 days though.

im on day like 65 i think? and my humidity is normal, around 40-50 and my temps go from 27-31 so its wierd as hell, but i highly doubt thats the problem, anyway i think its just letting me know to flush it, or maybe its over nuting because i was using the continuous feed soil, who knows it seems to be not messing with the bud maturing though

I always go by the trichomes. I believe I've had a few sativas that didn't go amber (or very little). Here's a pic of a bud about a week before harvest. As you can see, there's still a lot of white pistils.

Dude get your humidity down...somewhere around 25-30 or at least as low as possible.