There are organisations that work with people who have had challanging psychedelic experiences, but without taking the psychiatric approach. One such project is: https://zendoproject.org/
There are also therapists who work with people before and after psychedelic experiences, called psychedelic integration therapists. They usually have legit mainstream psychotherapy qualifications.
There are also integration circles where people support each other. For example, https://acerintegration.com/ This was set up by a researcher in psychedelics. Not sure if it would be appropriate for someone experiencing psychosis though. You could also try contacting the researcher directly for recommendations: https://www.drrosalindwatts.com/
You could also try contacting https://challengingpsychedelicexperiences.com/
There are also therapists who work with people before and after psychedelic experiences, called psychedelic integration therapists. They usually have legit mainstream psychotherapy qualifications.
There are also integration circles where people support each other. For example, https://acerintegration.com/ This was set up by a researcher in psychedelics. Not sure if it would be appropriate for someone experiencing psychosis though. You could also try contacting the researcher directly for recommendations: https://www.drrosalindwatts.com/
There are also forums where you could ask for advice, e.g. https://old.reddit.com/r/RationalPsychonaut/
They might be able to point you to other resources like this in your area.