Geodon - More Nothing?

I know it takes time and he's only been on it for 2 days but here's what we're seeing. He gets the Geodon with a meal (as directed). About 3 hours later he falls asleep for about 4 hours. He then gets up again and stays up. When he's awake he perseverates and usually paces non-stop. He responds to commands but does not converse. Briefly, this morning, at about 3am, he was lucid and conversant. It lasted about 30 minutes. He could say who I was (Daddy) and his age (15) with a rapid response. (These are questions he does not respond to when in perseveration mode) We talked about the importance of sleep and a little about his new school. He had some milk in glass which he poured himself. He took a bath and dried himself off. These last 2 items were things he was incapable of doing when perseverating but, of course, quite capable of doing before all this started 9 months ago. He also talked about death. He's now back to perseverating and pacing.