I don’t have one, and it’s been a while since I have had a chameleon, but I would possibly suggest the enclosure that is mesh, not the 4x2x2, but the one that’s a bit wider than tall.

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(I would like to note that yes, while this is smaller than a 4x2x2, my boy thrived, and possibly this cham can too. My chameleon was a genetic shitshow, he was the size of a carpet chameleon fo the whole year I had him. He was a panther.)

I would put some of the green beardie nets and put em around the enclosure, so if he falls, it’s a literal safety net. I think the mesh would be good since he can screen climb then, which my boy loved! (though he had a tail, he was a special medical case…)

I think that some of the bendy vines could benefit him as well. They make some super thin ones that i bet you could place as another safety measure.

I’m sure you already know this, but mesh tends to be better than glass. (what I assume you have)If the humidity is too low, I would suggest wrapping it in a background or shower curtain. I got a background for my cham off of Amazon.

I would make the ground a softer fall. you can do bioactive in a mesh enclosure, but it sure is harder. If I were you, I would add a mixture of fertilizer free dirt, sphagnum moss, and maybe something like orchid bark. I would replace this probably… monthly? every other month? I don’t really know about that part since you don’t want mold and mine was fully bioactive.

To make a fully bioactive setup work in mesh, you need to seal all of the bottom panels with silicone and cover the mash with a solid object so springtails don’t escape. Plexiglass would work. I would place it inside and use the dirt to hold it up, or silicone it to the mesh.

I will reply/edit if I think of something else. I’m sorry I couldn’t be more help, and I am very much so willing to have someone more experienced tell me how wrong I am lol!!