I've never bathed mine.....unless your dragon drinks while being bathed, then it won't benefit her. If she DOES drink in the
bath you could do so every 2 weeks, not weekly because the metabolism is slowed down, body functions decrease and so does the need for food/water. You might also offer water via eyedropper or syringe directly on her snout for a drink. You can tuck a thick wad of paper towels under her chin to catch the drops every other week. If bathed, pat her dry + put directly back in the tank. I've always let mine sleep right through, but conditions are conducive in my cellar during the winter for a real brumation, temps. being just above 60 degrees.