I have been trying to introduce new foods to my tort following the advice here, Iʻve chopped up his favorites a little smaller and left the new things bigger so itʻs harder for him to pick and choose. I understand that it can take several weeks, but every time I do that, he poops on his feeding slate then puts himself in time out for the day, literally putting his face in the corner. By evening time the food is all dried and shriveled so I remove it and cave into his emotional blackmail by giving him some radicchio - which he seems to think is tortoise crack. Any other suggestions?