Hi, my bearded dragon is a juvenile who is suffering from bad dehydration. I am currently getting him as much water as I can and bathing him. Recently, however, (by recently I mean the last few months) he has stayed in the coldest part of his enclosure- the Cold Corner as I call it. He just sits there all day, seemingly not bothered by how cold it is. I don't know what to do. His basking spot is about 95-100 degrees F. Whenever I move him to it he runs back to the corner. He has a Reptisun T5 tube bulb for UVB. (that is what it's called right? I forgot).