Everything I've learned about therapeutic psilocybin treatment is that the doses involved are actually quite a bit higher than I've ever done on a trip at home.

For example for psychedelic therapy with psilocybin, you would see a therapist a few times with no psilocybin, then you would have a session where you take something like the equivalent of 1 gram of dried mushrooms, and go through that session with the therapist. Then come back 1-2 weeks later and take something like a "heroic" dose or about 5 grams dried mushroom equivalent and go through that session with the therapist. Then you come back again two weeks later and have a sober session again to talk about all of it.

My understanding is that this is generally how the well respected research studies have gone. The most I have ever done myself is 2 grams dried mushroom equivalent, and I usually stay under 1.