Be sure the cool side is not lower then 80 day and night. What's the humidity? Should be 80%. Lower the longer white thermometer to be more tort level. Water dish is too small. The clay saucer should be the water dish and lowered into the substrate so the top of the rim is level with top of substrate.
For very young tortoises I don't have a hot side, cool side. The whole enclosure is 80-85F degrees with a slight drop overnight.