If you try to feed to fight the fade you get really harsh smoke. I would let nature run its course, people have this ridiculous need to always tinker with things and play God. In the fall the leaves change outside, same thing with cannabis near the end. I know some good growers who in the beginning absolutely ruined grows with too many nutes. If you don't believe me look at my plants, I always let them fade as much or as little as they want as long as it's in the last few weeks. If you have 5 weeks to go then give them something without nitrogen in it. Nitrogen is your mortal enemy in flower, it makes way too many chlorophyll and then the plant can't break them all down during dry/cure, at which point, smoking chlorophyll is super harsh and gives it the hay smell and taste. Also compost teas are awesome especially if you use dry amendments. They process your nutes because in nature plants eat microbes not random nutes floating in the soil. They bring them in, store them intil they need say iron for example, then they melt the cell wall with super oxide, take the nutes they want, then a hormone elongates the root hairs as the microbes exit, the plant sends them with a little bit of food to rebuild their cell wall and start all over again. The other microbes that get led inside that can't handle the super oxide don't survive it and just die.
