How are you struggling with your water system? Do you mean misting, drainage, other?
Although afaik Jackson’s don’t nibble on their plants like veileds, it’s always best to have lots of safe live plants for them to hide in, sleep in, drink from, get a pocket of humidity and just for them to live more naturally. There’s quite a few great safe plants and this is where to find that info.
https://chameleonacademy.com/plants/ That site is also a fantastic resource to learn not just the standards of husbandry, but why we do things the way we do. But, if you want some truly personal guidance, this is the place.

From your pics I can see that your little beauty will be needing a much larger enclosure. 2x2x4’ is the minimum size for adult chameleons and they use every last inch that we give them. It looks like you have possibly bought the chameleon kit…yes? The green reptile carpet tends to just be a way to grow lots of bacteria, so it’s advised to not use it.While it may not look as pretty, a bare floor is best and most hygienic. Filling it up with lots of plants will hide the plainness.
Now I do have to ask what supplements you’ve been using and how often for each one. Jackson’s are very sensitive to multivitamins and D3, so it’s important to get the right regimen.
If you want a full review of all of your husbandry, just ask.