Hi, I recently got a Russian Tortoise, mature male, about 3 months ago. He's always been very active and had a voracious appetite but over the past few weeks he's been less active and won't eat. He will come out of his house when he hears my voice and he will sniff his food but will only pick at it or won't touch it. He also isn't soaking in his dish as much as he used to. He eats a diet of fresh produce and I change it up every couple weeks to keep him interested but he won't even eat his favorite foods anymore. I changed all his bedding just in case and I keep his water clean. He has a UVA/UVB daytime light and a day and night heat lamp. I am thinking of taking him to the vet but wanted to get some opinions first. Thanks!