Same as every one says, ditch the guard its just a play thing for them. Mine no longer has hers and now she knows she cant get to the bulb so she doesn't try any more. She is a little bit older than yours but still loves to climb, often scaring the life out of me when she decides to run and jump from ledge to ledge.
0.1.0 Pogona vitticeps - Mary Beard
0.1.0 Eublepharis macularius - Marmalady