There's not enough context to reasonably answer that question.
1. How do you know this is the tortoise's age? Where did you purchase this tortoise?
2. What type of foods are you specifically feeding the tortoise?
3. What is the temperature levels (hot side, basking area, ambient, cold side) and night time temperature?
4. Do you have a picture of your entire enclosure so members can help point out any possible unsafe items to remove.