I know that you will need DH's support if you need to quit properly, do go to AA do let your GP know as well and your HV, the more people know the better support you will get.
Remember it is an illness and almost impossible to quit without some pretty tough controls being placed on you
I have often suspected I have a problem, however I have learned mine is habit not addiction...
I was able to stop when I needed to by asking DH to cut my money off totally, but also by him gently diverting me.
You may need to go through a detox and counselling if your body with withdrawing from hard liquor (spirits) of that quantity,
Do try and get your DH on side and to the support group for family of AA.
I wish you luck... I know how hard it can be, you are really halfway there acknowledging you have a problem.
Hugs