Sour Diesel Dropping leaves

Hey guys. I have been feeding alot and the fading has not improved. Nor has it gotten drastically worse. I do have another question. This is a BIG Sour Diesel plant in an indoor 5 gallon grow in soil.

Could the plant be getting close to finished? Some tric are amber most are cloudy. Also, if the trichomes go amber but the plant still looks healthy… Harvest or wait?