Good for you for reaching out to your GP and making the appointment. I firmly agree with the position of just do not stop drinking suddenly. I've had 2 withdrawal seizures, and the DT's, as well as almost dying in a medical supervised withdrawal. At the level you're drinking it's nothing to mess around with.
I hope you're able to get professional help with detox and treatment. Self help groups can be a good source of support too, once you've detoxed. There's AA, which has the advantage of being just about everywhere. But if they're not your cup of tea, then there's also SMART recovery, an Secular Organization for Sobriety (SOS).
Remember to just take it one day, or one minute at a time.
splitimage
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"I danced in the morning when the world was begun. I danced in the moon and the stars and the sun". From my favourite hymn.
"If you see the wonder in a fairy tale, you can take the future even if you fail." Abba