I have an adult bearded dragon that has been losing appetite over a period of about two months. He first stopped eating greens, to which I only fed him superworms. He began to eat less, and started to lose weight. About a week and a half ago I was about to take him to the vet, but he started eating again, so I assumed that he was getting better. He has since stopped eating again, losing even more body weight and becoming lethargic. He is also clearly constipated, as he has attempted and failed to defecate numerous times. In an attempt to help with his constipation, I blended collard greens, apple, water, and some calcium and fed it to him through a syringe. Hours later, or now, he attempted to throw it up violently, then became limp, no longer breathing. I was able to get the rest of it out of his mouth, as well as get him breathing again. He is mostly limp, his eyes ajar and breathing with a black beard, however he is mostly unresponsive. He occasionally gets the energy to lift his head into the air, but immediately tires out and lays back down. I have followed all the advice I could online and gave him a warm bath keeping his head out of the water as he is too weak to do it himself. He is now resting on a heating pad. No reptile or animal vets are open until tomorrow. I figure I shouldn't try feeding him anything while he's unresponsive as I don't wish to choke him. Is there anything I can do to help him survive until tomorrow?