I have schizophrenia and as far as I'm aware, there's not much you can do besides medicate it... I think there was a study that showed that things like CBT and DBT don't work... So if it turns out to be that (though it could be many things, like a physical problem, bipolar, maybe even a personality disorder like schizotypal, who knows?) then I'm afraid you're probably SOL. Especially if the problem is disorganization. Hallucinations you can learn to work around, delusions can be resistant to meds and require other treatment, but disorganization? No idea how else to treat that.