Hehe, I've been off my lithium carbonate for a 9-month period without problem and was put back on it because my dad wants to pin the psychological issues caused by him and his girlfriend onto a diagnosis I got when I was 8. I've been off the other two for weeks at a time as well with little problem.
It's weird that you say that since lithium carbonate (afaik) is usually used in the treatment of bipolar disorder which... I doubt many psychologists would be comfortable diagnosing in an 8 year old (well, that or most mental illnesses tbh). What went on there?
or am i just misreading your post