not knowing any of his history prior to coming to you makes it sort of tough. even still, he will continue to need uvb at minimum, so first you need to make a decision if you are serious about trying to rescue him. realistically that will be hard to accomplish without spending a moderate of money and time. if you are not up for that, then it would probably be better to try and find a reptile rescue organization in you area, or possibly an existing jacksons keeper. if you decide that you do want to try yourself, then the best thing would probably be to set up a makeshift cage outside, if you keep him indoors for any length of time (more than a week), he will need a reptisun 5.0 light and fixture, and at least some calcium. probably around $50. before you spend anything you should be aware there is a significant chance that he will not make it. if you can put together a makeshift screen cage for outside (in the shade). then you will be able to save most of the lighting&supplement expense (for now) you can get a roll of plastic coated 1/2" mesh hardware cloth . stateside it would cost about $10, but over there it could be more expensive. you could just take the whole roll (should be at least 7-8' long) unroll it and zip tie the ends together. a 7' piece (longer would be better) will give you a cage of about 24" in diameter. you can just set it directly on the ground, and place a piece of plywood or something on top . if you try and use lighter screen then you will need to build some sort of frame. or maybe you could come up with a used bird cage or something. even before you get him setup, i would recomend (like the previous posters have said ) misting him for at least 30 seconds probably at least 5x a day, sometimes they have to be misted for a period of time before they will start to drink. if he is healthy enough to make it, he will probably start drinking at some point, if you keep him surrounded by enough moisture. at this point water is probably more important than food. if he is not opening his eyes, then (for now) it would be best to keep him in subdued light that still provides uvb (reptisun 5.0 or outside in the shade) or if you have the time you could just take him outside and hang out with him for an hr or so a day, so he gets the uvb he needs. then you can just let him hang out on the plant inside or maybe you could place the plant in front of a screened window that is left open (in general terms uvb does not pass through glass). if it appears that he is not going to make it then you might consider just letting him go again. not the most desireable option, but better to die a chameleon death as a wild free chameleon, than to die in a cage. jmo