Can Q destroy its own omnipotent powers?

If Q are omnipotent and can do absolutely anything, are they also capable of destroing their own omnipotent powers and become... average species? Is there any in-universe, canon example or explanation for this (I'm not talking about suicide or murder)?

Could this (completely destroying one's own omnipotent powers) be a solution to Amanda Rogers in "True Q" episode? If she'd do that, she would stop being any "problem" to Q continuum and she could follow her Starfleet career, she was always dreaming about.