actually yours he looks like she to me

not 100% sure from the pic, but it looks like it. how big the frog is right now? is it adult?
anyway - light for night- don't worry, nothing special needed, she looks perfectly happy with very round belly

I have night blue heating lamps for both tanks, but it is out of necessity to keep temps up, day - I would get direct uvb anyway for at least a few hours a day.
I'm not sure - what kind of substrate you're using? and you have a water bowl, right?
and to reply what do you need to stimulate their walking, don't expect them walk too much, they won't move from a spot unless they're hungry and only if food is far away, they're pretty lazy frogs, most would prefer for food to come to them instead of other way around :lol: