Hi. My adult mesopotamian greek tortoises are sleeping all day. Recently the number of inactive tortoises is increasing. Day temp is about 25c and night temp is about 15~17c. They can use direct sun light from the opened windows. Three basking spots are positioned. Very few of them are very active and eating very well but rest of them are inactive and just sleeping all day. Although I put them front of the food, they eat very well. What's the problem with them? I attached some photos of my enclosure. Check them all right. Thank you.