My baby Sulcata hasn't been himself lately and I'm very worried that he could be sick. He used to walk around his tank, take daily walks, be very excited for dinner time but lately he has done a 180 change. He is very lethargic and sleeps about 90% of the time. He barely touches his food and his shell feels soft, much more so than what's normal for babies. I'm worried about my little guy. Does anyone have any ideas?