Gecko doesn’t seem to want to eat

My leopard gecko is about 13 years old, I got him one year ago from a family that surrendered him. He didn’t have proper lighting or heat previously, but since I’ve had him I’ve tried to give him everything he needs to be a happy leo. Recently I got him a new terrarium about 2 weeks ago now, a 3x2x2 and I’ll post a pic of his set up for reference later… but he hasn’t eaten in a few days and I’m getting worried. I’ve offered him food on tweezers (this is usually how I feed him since he seems to struggle to catch food sometimes) and he seemed interested at first, but started to ignore the food. It’s been about 5 days since he last ate. He usually comes out to eat every night and begs at the window but I assumed it had something to do with the weather as its started to get cold at night. The temperature of the house never goes below 62F, and his hot side is almost always 90-98 depending on how close he sits to the lamp. His cool side is anywhere between 70-80F. Could he be in hibernation? He went to the vet about 4 weeks ago for some problems with his left eye which have been resolved, otherwise has a clean bill of health and the vet said he looked great for his age. He also gets regular access to calcium without D3 and a multivitamin with all sorts of good stuff in it.

I’ve never had him struggle to eat, and I’m hopeful it’s not age related. I’m hoping it’s related to the winter changes. Anyway, I’d really appreciate some advice if anyone on here has dealt with the lack of appetite!

My leopard gecko is about 13 years old, I got him one year ago from a family that surrendered him. He didn’t have proper lighting or heat previously, but since I’ve had him I’ve tried to give him everything he needs to be a happy leo. Recently I got him a new terrarium about 2 weeks ago now, a 3x2x2 and I’ll post a pic of his set up for reference later… but he hasn’t eaten in a few days and I’m getting worried. I’ve offered him food on tweezers (this is usually how I feed him since he seems to struggle to catch food sometimes) and he seemed interested at first, but started to ignore the food. It’s been about 5 days since he last ate. He usually comes out to eat every night and begs at the window but I assumed it had something to do with the weather as its started to get cold at night. The temperature of the house never goes below 62F, and his hot side is almost always 90-98 depending on how close he sits to the lamp. His cool side is anywhere between 70-80F. Could he be in hibernation? He went to the vet about 4 weeks ago for some problems with his left eye which have been resolved, otherwise has a clean bill of health and the vet said he looked great for his age. He also gets regular access to calcium without D3 and a multivitamin with all sorts of good stuff in it.

I’ve never had him struggle to eat, and I’m hopeful it’s not age related. I’m hoping it’s related to the winter changes. Anyway, I’d really appreciate some advice if anyone on here has dealt with the lack of appetite!