There have been people recommending shotglasses and water bowls in chameleon cages lately (namely on the chameleon subreddit) which is very confusing to me. Yes, they do drink from water bowls and such if you "train" them to, but it does not seem like natural behavior. Plus, they'd rather poop in their water than drink it, from my experience. I would stick to misting the leaves heavily to get them to drink, it stimulates their natural response to start drinking when it rains and such.
Also, you'll want to ditch the substrate. If the cham eats any of that, they're in for a load of trouble / possible impaction. It is also a harbor for germs and other things, and if the bugs get out of the bowl, it gives them another place to hide, which is an obvious problem because that means your chameleon won't be able to find them! :O
Other than that, just make sure that as your chameleon grows, you provide it with a cage large enough for its needs. And if you ever have problems keeping up humidity for your little guy, try adding a live plant or two, but make sure to check the safe-list beforehand.
Good luck