Does the tortoise move when you gently pull its leg? Or is it just moving less than usual. Does the tortoise lack exerciser because the enclosure is small?
Hello!
I really hope that your tortoise is still alive. But puffiness is a bad sign. If limbs are not stiff and there signs of movement you may try "carrot soaks":
1. You need an opaque plastic tub and canned carrot food for babies (for human babies, like "Gerber's")
2. Mix lukewarm water and carrot food 50/50 and pour in the tub. Water should be shallow, up to level where top and bottom shell of your tortoise meet.
3. Put your tortoise in the tub for 30-60 minutes. Don't leave it unsupervised.
4. Keep water warm all the time - you can place the tub in the enclosure, close to the heat lamp. But NOT directly under the lamp.
I see a can of ReptoMin food on the top of the enclosure, do you feed to your tortoise?