I know your feeling relaxed because the vet said he was fine. I don't want to be the one that sits and harps on the issues of husbandry. But I also don't want your cham to decline further. I really hope you take all the feedback that was given to you. He is in desperate need of the correct UVB lighting and supplementation to stop the progress of the MBD that he is clearly showing in his casque before it causes deformities in his limbs.
I am not sure how much experience your vet actually has with chameleons. But your cham is not perfectly healthy. With changes he can improve before he gets worse.
Again I don't want to come off rude and I hope you understand that the only thing I want for your cham is the environment it needs to thrive.
Please do not lean into what the vet told you.
Veileds do not need a daytime high humidity. It should be 30-40% and that is it.
I know your getting info from others outside of this forum and you are taking their word for it. But please please trust us. We know what we are doing. We are experienced keepers and are trying to gift you with our feedback so your chameleon thrives.
link for an enclosure
https://www.diycages.com/collection...ducts/sc4-48x24x24-jumbo-vertical-screen-cage