I waited almost 2 weeks to feed mine. I fully thawed out a small mouse at room temp in a zip lock and not in water,then put the heat light above it for like 5 minutes or more ,Dangled it in the tank and he snatched it. Been good since.
Make sure the frozen thawed is fully thawed and warm, it works for me. Haven't fed him live yet,when I do,I'm site it won't be a problem.