What is the history of this turtle?? Looks like a young Eastern (Terrapene carolina carolina)?? I have one raised from egg that is now a 10-year-old adult male, currently hibernating. Keep trying different foods......though they are more carnivorous when young and will generally like more plant material as they get older. earthworms, slugs, sow bugs, centipedes, crickets all good. Try strawberries, blueberries, cantaloupe, chopped kale etc. . You can try miing some small or chpped earthworms with some chopped veggies. Some cooked egg (unsalted!) sometimes getw their attention too..........and it can be mixed with some chopped veggies. These little guys are becoming increasingly rare and can live a long time. Take good care of that guy....looks like you have a nice set-up and start.