I've been on roaccutane for about 9 months for mild acne. 40mgs a day for 8 months (2 tablets a day) was told nothing about weaning off, 12 tabs left?

Check with doctor. Please consult the doctor that prescribed the medication to determine what to do next. Be sure you didn't miss any follow-up appointments.
ROACCUTANE. Roaccutane, known as Accutane in the United States, usually clears acne in 5 or 6 months. Why don't you ask your doctor about weaning you off this?