I'm not sure if someone said this yet but get rid of the substrate. A loose substrate can be very dangerous to chameleons, I prefer a bare floor but you can use paper towels if you wish. Also, the cage needs more structured foliage to climb on, I suggest a ficus or schefflera that will fill most of the cage, you might be able to get away with just that pothos if you raise it up by suspending it, or putting it on a pail or something to raise it a foot or more, and adding some climbing vines/branches.