Hi guys/gals, I am new to the world of geckos and we inherited a 15-year-old Tokay Gecko from my mother in law who could no longer care for the animal. I am a python guy generally but this little gecko is just super awesome with tons of personality. The issue is he has just completely stopped eating and is dropping weight fairly rapidly. I did take him to the local reptile vet and we started him on some carnivore food paste ( no idea what the real name is) I have been monitoring his weight and he is currently down to 50g's so we are feeding him about .25 ml of the paste twice a day by syringing the food in his mouth, which the vet showed us how to do this safely. Other than the weight issue the little guy seems to be in great health. We have tried feeding him crickets and waxworms. My vet breeds geckos and said that he would bring me a few dubia roaches to offer as a food item as well. I have him in my quarantine enclosure for now and know I am meeting his needs of heat and humidity because my environments are strictly controlled. My question is, is this typical for these guys to abruptly stop eating? is he just getting old? Or could it just be a stress thing? we haven't had him very long but we just love this little guy a ton, so any advice or insight would be greatly appreciated.