BLUE TONGUE SKINKS

Ive had my Blue tongue for about 4 years but he has been refusing to eat for nearly a year and i have no idea what to do his tail is flat

So when you say your skink hasn't eating barely in a year, what do you mean by that? What is it's diet? How much are you feeding? If your skink is losing weight, not eating, and lethargic it needs a vet visit asap.