Cleaning cage

I have an A. seemanni (Costa Rican Striped-Knee) who has a rather extensive burrow system in her cage. I know I should replace the soil every few months, and I have not since I got her (in April) as I’m scared to ruin her burrow or hurt her. How should I go about cleaning? I keep her soil moist so I am concerned about mold. I also have no idea how I would even coax her out of her burrow because she is so skittish and sometimes closes off the entrance. Any advice is appreciated!