This is just a suggestion from something I read and tried on a tortoise with a uri. This was years ago. I read that one reason wild tortoises with a uri don't survive is because they can't smell food so they don't look for it. Along with everything else everyone has told you... you might try non-invasive handfeeding technics. Long leafy greens to keep your fingers out of the way. And it's less stressful than placing them everytime close to the food tile. My tortoise still throws a little fit if I try to make him eat. He wants to do what he wants to do when he wants to do it.
