schizophrenia, please advise if you can

PLEASE PLEASE PLEASE HELP IF YOU CAN, THANK YOU
my brother has had schizophrenia with depression for more than 25 years he has been on haldol 50 mg injection for schizophrenia and paxil 40 mg (anti depressant) and medicine for hand tremor and sleeping pills! his MD/Homeopath gave him Stramonium 30c 2 pellets a day for 3 days, first day he wasn't good he was talking to himself and was not attentive and was moving his hands like showing something! but at night he slept better! and the day after he felt good he was happy and wasn't talking to himself much and he was more attentive and less forgetful than usual but after the third day he wasn't good for few days and then again he was the same as before he started Stramonium 30c, after 2 weeks DR. went up to 200 c 1 pellet daily for 3 days! he didn't feel good at all for 3 weeks and then he was the same as usual, so I think lower potency and dose worked better for him!
FYI: even when he does his injection he doesn't feel good for 1-3 days then he feels good for 2 weeks!
his symptoms are:
delirium; muttering
talking to himself
makes gestures; of hands; grasping or reaching at something
hand tremor (could be because of his medicine haldol)
restlessness, nervousness
eye: staring
sleeplessness, insomnia, Sleepy, but cannot sleep
draws lines all the time
forgetful, forgets what he said and repeats, forgets while talking
not attentive (for example: he doesn't get it right away when someone talks to him)
depression, loner
smokes a lot
one thing I noticed is after taking Stramonium he was smiling and laughing with himself more!
so please let me know what you think and if he can suggest anything,THANK YOU SOOO VERY MUCH
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