Steps to overcome a minor addiction alone? And best timing for it if moving?

Person does not want any help from family or friends. also won’t speak w/ a psychotherapist.

got recomendations for homeopathic remedies for internal damage since their stomach lining wss prob. damaged?

mainly sleep meds and oxycodone containing pills have been used.

Also if there’s a major move (i.e., to a country w/ very little mental health resources) about to be made would it be better to stop taking the meds before or after the move.