Appreciating your insight and the main thing here is to understanding your problem is not that simple first of all we should understand your basic to everything and then the process of treatment will cover up. You're already in psychiatrist treatment and get a good drug dealer addiction psychologist appointment. Good luck and take care.

No amount of ganja consumption is safe. Treatment precisely means medicine might stop after 5 months as per the advice by your psychiatrist. Complete treatment consist of Medicine and Counselling/ psychotherapy. Stopping Ganja is not the goal staying stopped is. Your abstinence is the key for long-term recovery.  Dependency on drugs is highly relapse prone disease. Talk to addiction therapist. You are physically abstaining from ganja but for long term recovery one also need to bring positive changes, learn how to handle craving, triggers and warning signs. Your addiction therapist can design tailor made relapse prevention plan for you. Feel free to contact for further details.

I appreciate that you are aware about your issue and taking care of yourself. To avoid craving you need to work with  de-addiction. Along with psychatric also take psychologist session specially expert in CBT therapy to help you best.