Please be aware that sunken eyes do NOT always indicate dehydration! Forcing water on a sick chameleon can do more harm than good. It can be dehydration, but there are many instances where chameleons are ill and unfortunately on their way out when their eyes sink in. In any case, it is a bad...
I would add some more vines and branches also. Make sure to run some of them horizontally from one side of the cage to the other. The more walkways, the better!!
Something doesn’t seem right....you have a 150 watt in a glass tank and your temp range at basking is between 85-92? What are you measuring your temps with?. You should be using a laser gun and directing the beam on the branch under the light where you chameleon sits. He may be overheating...