nutrient deficiency w/ harvest in sight.

Hey everyone, it's been a while since I posted. I finally got around to my first grow and everything is going great. I have 2 Short Stuff Snow Ryders growing under a T5 setup with their roots in a 50/50 mix of Fox Farm Ocean Forest and Light Warrior. Buds are packing on weight and getting frosty and have a wonderful sweet, tangy and dank spicy aroma to them. The girls had there last feeding of light nutes last wednesday on 5/29 and have had only water since. The issue that has presented itself this morning(on thing #1 as I call her) is a beginning stages of a deficiency(either Nitrogen or Magnesium). Now, here is the kicker.....the estimated harvest is between 6/13 and 6/20. The trichomes are roughly 30% cloudy 70% clear, with no amber that I can see. The bud hairs are turning a nice golden amber/brown with about 60-70% still white. Here is my question.....should I try to fix the nutrient deficiency so close to possible harvest or just let the girls tough it out in their final few days?

What makes you think theres a nitro def? Yellow leaves? If so maybe you should do more research....

N shows in the lower fans, mag will show on top.

Grow green leaves until the end, it's not a bad thing.

my plants shed leaves i starve them so hard in the end
if its time for it to finish then its fairly normal
and if you mean last feed of bloom nutes then flush
then you have been starving them of (N) for a month or so now
bloom is usually lower in (N)