I have 2 Whites Tree Frogs, one is much larger and confident whereas the other is quite small and shy. They haven't been sexed but I think they are both male. This morning I noticed the smaller one sat on the floor in a shallow well that it had made. I know burrowing isn't good! The warmest part of the tank is currently 27.2 degrees Celsius and the humidity is 54%.

Does anyone know why this might be happening and what I can do to help?
*they're currently on orchid bark but will be changed to coco fibre this week*