Hey man my advice on that one is it's either being watered to much or to little. Also don't rely just on color of the hairs the trichomes (THAT FROST) is mainly what you wanna look at. They will be a cloudy cover when ready to harvest, but for a more couch lock type stone wait even further until they are about 30% Amber color ( reddish brown) looking at the trichomes is key. That plant is definitely suffering from some sort of water issue tho stick your finger in the dirt and check to see if it's wet about an inch or so down. If it's very wet stop watering it until you can do that and feel it's dry, if it's dry initially then water it accordingly.
like