Sugar leafs dying back in wk 7 flower is this normal?

Hey whats up growmies, so quick question here with attached pics. I grow organically under a 1,000 watt de hps by mixjoy m Temps avg 78 and humidity 45%. I'm currently on day 53 of flower thats week 7 and 4 days into week 7, the cultivar is Bomb Azz Wafflez from The Bakery Genetics, I was told this is a 8week strain but I can't find anything online more about it. So as of 3 days ago a few leafs, Sugar leafs started curling up, still green and moist but started curling up towards the buds and getting this dry crinkle look to it. Now if I pull on the leaf it will pluck out pretty easy, no scissors involved, and other than the tips the leaf still looks healthy. What is going on? Does anyone have a clue? I'm waiting on my jewelers loupe to get here from Amazon any day so I can peep game on my trichomes to find my harvest window, I'm looking for 25% amber before I pull, personal preferences. Is this a sign the plants ready to be harvested? Thanks in advance for the help.

What nutrients are you feeding, feed/water sched, ppm/ec, pH? How close are the lights

It could be too strong on the nutes? Maybe light stress? Just throwing out ideas...nothing definitive.

Only feeding R.O water with 20ml of terpeneze per gal, Carbo Load 20ml per gal and Raw Blue Green Agave 20ml per gallon for the last 9 days. My 1,000 watt de hps sits at 32" inches above the canopy and there's plenty of fresh airflow. My p.h is 6.3

How are you checking the temps at bud level? A 1,000 DE that close is probably the cause

Agreed with Rurumo, too close of a distance to your DE can cause light burn even if Temps are in check. While your issue isn't the end of the world or a BIG problem, it is indicative that there is an issue sort of nagging at your plants. Sugar leaves really shouldn't ever die back, fall off, or go yellow (but maybe for flushing, you may see some yellow but not brown/burnt/dieback.). I know that many strains hitting this time period crave a reduction of nutes, but we really need to see whole plant pictures to even attempt to say whether it's too much or too little of any nutrient. Bud pics alone aren't enough info. Need to be able to see top, middle, and bottom growth.

Ok so it looks to be bud mold. I removed any portions that had affected areas in them and disposed of them properly. It has stopped the progression of its travel and is gone now that affected areas have been removed. I think I got some droplets of water on the buds a few days ago while cleaning, this going unchecked I believe resulted in a few spots with bud mold but not the entire plant thank god!