Hello.
I am not in recovery for anything, but I have some training in working with people suffering from an addiction and a mental illness. I don't want to sound rude or judgemental or uncaring, but it sounds like you are hiding behind your doctor's lack of support as an excuse not to do something that will be very difficult. You have to quit because you want to do it for you and it is totally in your hands. However, I am an absolute supporter of programs like AA because everyone needs support. If you liked it, go back. It was suggested that I attend OA after I was banded at a rate of six different meetings in two weeks to find one I liked. If you don't have a group to fall back on you might try that. After you find one, ask them for help. They will help you. And, as my training dictates, you need to attend 90 meetings in 90 days, whether you are sober or not. You will only absorb about a third of those meetings.
Please don't let people who have very likely never had an addiction dictate how you proceed with your own recovery. They can't understand what you are going through. It is good to keep them informed, especially the doctor dealing with your psych meds. And keep in mind that mental illness and addiction are SEPERATE illnesses and both must be treated. Don't neglect one and hope it will go away when the other is treated.
I hope I didn't sound preachy or offend you in any way, I want to be helpful and encouraging. I wish you the best of luck with your endeavors and I hope you obtain the support you need.
-Dee