Hey! Just some thoughts

You need a hide on the warm and cool side. Identical hides, preferably, and ones that are tight and snug like the black reptile basics hide. You can use something as simple as a tupperwear with a 'door' cut in it. If a bp is given two identical hides, they won't sacrifice their temperature regulation for the more comfortable hide.

You should cover the lid with something like tinfoil wrapped around cardboard to try and keep in more humidity. That, or go for a plexiglass lid.

How are you heating? UTH on a thermostat? Lights?

How are you measuring temps?