@kara2323 you do not seem open to feedback. But I am going to try anyways.... hopefully you will understand that us trying is us helping you provide what your chameleon needs to not only survive but thrive.
As already stated a glass aquarium is for fish not a chameleon... There is a very specific reason for that. They are hot boxes without air flow. Literally no air flow. So you mist the enclosure and then it becomes a hot wet box without air flow and a bacteria breeding ground. This then leads to them developing a respiratory infection. The Pet store was very wrong to have you buy this. This is how babies die.
You say it is impossible for you to get a 2x2x4 cage... Then the chameleon will suffer and you should rethink keeping him.
As mention UVB lighting is extremely important. 2-3 weeks without proper UVB lighting is allowing MBD to start in his little body. This advances fast to the point of permanent disfigurement of the limbs and even the casque and jaw.
The substrate in the bottom is an impaction risk.
I really would fill out the form so we can help you identify the other incorrect advice you were given. If your not open to help then I urge you to start reading this husbandry program so you can learn about the correct way to keep your chameleon...
https://chameleonacademy.com/chameleon-husbandry-program-getting-started-with-chameleons/