there are no definite answers...I do wonder though, if you were completely clear for FIVE years, did it never cross your mind at say the one year mark to taper off? seems strange to wait 5 years then quick cold turkey.
one thing we all need to do, is make changes very very very very very very slowly....we do not have the luxury of quick changes
once you get clear again, taper off slowly and switch to an AHA in the evening or morning and just BP the other time of day...then slowly taper off the BP
and don't wait 5 years this time! hopefully you will be clear again soon, and great that BP works for you, but long term BP is just not good for the skin, but slowly taper off and start on something else that will help that IS good for your skin, ie AHA