Bluebird, I am of the mind if a person is stable don't change the meds, even though I think natural is nice, stable is of utmost importance.
The other problem with getting off meds is that you may or may not have side affects. When meds are first started it takes time for them to work. When someone stops they take a considerable time to stop working. The worst case situation is the person getting off substantial med dx like you have may be fine for a few months then have a major break down with IP.
Only a doctor of psychiatry has the expertise to know how or if getting off meds will work. Here are articles that discuss the topic.
https://www.google.com/url?q=http://...04H_cmmvvu1Rew
https://www.google.com/url?q=http://...4U7X9SJ58uQcWA
https://www.google.com/url?q=http://...NB49PEo20v48aA