Looks like an infection if hes not able to support himself just make him comfortable on the bottom of his cage. A vet visit is crucial at this point... Usually vets have an emergency contact # so I would try that asap.
Maybe just get some vines for a walkway then... I really like the look of different sized exoterra vines twisted together... And I think it was zilla (although I could be wrong) that made this really thin tiny twisty vine.
it also helps if you put the screws in the dowels first to get the hole started and then put them in place and rescrew them. Ive had a few dowles split because the screw didnt go in exactly straight. If this does happen you can wrap the ends in duct tape to keep them together.
if you do the same thing but use a washer on the outside of the cage and a small screw going into the washer it will hold it up. Also make sure you cut the dowel slightly larger than the opening in the cage because the screen will split if tightened too much. If you make the dowel slightly...
that may be true but they can also somewhat get out of the way of the rain unlike a cham in a small cage where it may not have adequate cover to hide from the water if it chooses.
i changed my chams cages around all every now and then after a few cleanings. Mine didnt mind it too much but dont change it every other day or somthing crazy like that. When the cage is kept the same they have some sence of home and security.
"ready to give up and get a iguana" -- You probably shouldnt get an iguana unless youve already had experience with them or are ready for them all together. Although they are cheap to buy they should only be kept by advanced keepers and in my opinion much more difficult to take care of than a...
just keep doing that as much as you can and ur cham will start to open up to you. I had to start out by placing superworms on the door of my chams cage and letting the crawl up while my hand was right next to them. He eventually started taking anything from my hand. Keep it up :D
Ive never tried silkies... With worms tho they are generally easier to feed because they are long and skinny... I would just use your best judgment as to what would fit inbetween your chams eyes and not look too difficult for him