Fatten that boy up! He can have all the mealworms he wants XD.
I'm not sure with leopard geckos, but brumation is discouraged for the first year in beardies and water dragons. (My new boy tends to be real lazy some days tho and I have to 'wake him up' despite it being lowest 20c in there. UV is a t5 and should still have another few months on it)
Are they sexually mature at 1 year? I'd let your girl have one laying season without breeding just to make sure things go smoothly. We lost our first dragon to egg-binding. She was a late bloomer and didn't lay till she was 5 years old and had brumated 'hard' that winter. Had over 20 eggs in her abdomen and some had cracked.
Found out when we got our water dragon that the orangish dragons in NZ all have horrible bloodlines due to one bad breeder caring more about colour than good breeding practices.
Apparently, all their girls are known for having egg binding issues.