The fact this happened so suddendly would suggest a possible heart issue, an injury or maybe swallowing something thats either poison or stuck inside. Lood carefully and see if theres any visible signs. Not much you can do more than examine and make him comfortable.
Im no expert but heres my 2 cents worth. If kept outdoors and gets natural sunlight no additional lighting is really needed. The calcium with d3 schedule is usually once/twice a month and without d3 at every feeding. Multi vitiman once a month.
probably small crickets may get him eating, or waxworms. May try handfeeding him [squashed worm with repashy mix?],they usually open their monty when you hold them.
i really want a carpet, but don't really have room/time. Their not too easy to find. Is there care sheet avail for them? I'm guessing care is similar to panthers but not sure. Go for it.
Look carefully for any signs of injuries or scratches. Cats usually 'play' with their victums before killing them. If in doubt take it to a vet to get checked out.
All chams are hard to care for. Even the hardier ones have special care requirements. Look at all the veiled and panther problems you see on this forum. Their uniqueness is also their weakness. Those google eyes and amazing tongue are more prone to problems, their diet and light requirements are...
i posted pics long ago, will try to update some photos. Also im differencating between being sick [ri, disease, etc] and injured [lamp burns, falls, wire cage issues] or improper care[mbd,etc]. I suspect you are one of the top keepers on this forum, don't doubt yourself. Reptile expo on Long...
I've had my veiled for about 3 years. Lost 2 pigmys to bad housekeeping on my part. Bearded dragon for 2 years, very healthy, and gargoyle gecko 1 year healthy despite much neglect. I'm not really very good at providing care but the cham free ranges in my living room over a 130gal indoor pond...
Carol it does seem like you have had some bad luck, i rarely see most lizards get sick. Usually whin mine have a issue it self induced or a mastake on my part. Hopefully you'll have better luck from now on. It would be weird if chams are less prone to sickness if kept in artifical envoirenments.