Hey you don’t need an appt w your doc to stop drinking. You can quit or taper, read up on what happens in withdrawal, what to expect and what to look out for and call an ambulance if you really feel to be in danger. Or just go to the ER and let them watch you the night.
You can surely reach ANY doc via telephone before October, like, today or tomorrow to discuss weaning off or dangers. There’s is also literally tons of info on this Forum if you use the 
up top to search for relevant keywords. Or plain old Google. First hit when I googled tapering off alcohol:
comes with an actual tapering schedule …
Here are resources you should definitely start perusing on top of stopping drinking itself.
I feel like you need to take some action. AA will also be great. You’re not the first person with this issue and won’t be the last. Get going!