^I'd have to agree.
I will take it further, though, and state that cannabis is downright harmful if you have a psychotic disorder. THC is the culprit.
CBD is generally all but bred out of most weed. If you live in a state/country which offers it legally and/or for medicinal purposes chances are it's conceivable to procure fairly accurately an extract of cannabis which has a high CBD content, such that it overrides the effect of any THC. But if I were in your shoes, I'd find a way to make sure that the amount of THC in a product I intend to consume by virtue of its CBD content, is truly negligible. I would make sure there's very little to no THC present.
CBD has shown promise in treating psychotic disorders, from what I've read. And while I'm not doctor, I can safely say that THC (other than perhaps strong, hallucinogenic NMDA antagonists and maybe some other hallucinogens) is downright contraindicated in people with psychotic disorders.
I know this may be a little meddling, but you really owe it to yourself to get well and not take anything that could make you worse off than you already are. One of the biggest things I've learned with respect to being mentally healthy is that it's not a game: what I artificially put into my body, and brain, isn't a toy. What may seem like a joy-ride can hide the reality of continuing to flog your mental well-being until you're literally gone.