With any addiction, there is no "cut back". It's either all or none. I've been there. Find a support group. You need someone to lean on who has been through this successfully. I made all the excuses in the world about my drinking and chewing tobacco addictions. Excuses are not legitimate. I surrounded myself with people who had been there or really wanted me to succeed. I owe a lot to them especially my wife. It can be done. Do not give up.