This is troubling. The diagnoses you’re sharing are serious and really do need a doctor’s care and supervision, or else they (and others) can get in trouble.
I know it’s not what you’re asking, but I would strongly urge you to make finding a doctor that they can work with the priority here.
You can use the New Release-The All Purpose Anxiety removal field for the anxiety component. That and the Depression fields might bring them some relief. The challenge will be the schizophrenia which will distort their experience of the results that these fields will produce. IOW, these fields may do a really good job for them but their schizophrenia might interfere with their ability to recognize that good job.