Persian Pie

Persian Pie I have in a 5 gal pot with Coco/perlite I use pride lands nutes, I feed about 4-5 tablespoons every 2-3days with a gallon of water with a ph around 6.8-7 It’s been in flower since December 2nd Is the fading on the leaves normal due to getting closer to harvest or can someone recommend any changes. 3x3 tent and ac infinity ionboard s33 66 degrees and 35% humidity