I would say it took about 4-6 months. So I would bet in the next few months you will continue to gain it back, little by little.
I've never been on tegretol so can't speak to that, but you were on risperdal for significantly longer than me so I think it would take a little longer to get out of your system. However they will get out of your system and you will regain your emotions.
It's a really ****** state of being but I truly believe that it is temporary, med induced, and reversible.