The only thing that works is not drinking. I know it sounds trite, but buying drink to have in your house 'just in case' is not setting yourself up for success.
Can you pour it down the sink? Or give it away? It is important that you go to Alcohol Services appointment with a clear head and no alcohol in your system. Give that a go, and believe you can do this. To do that, you have to start not drinking, and then not quit. Take advantage of the help you can find yourself, and make things as easy for yourself as you can do.
Steady as she goes there, Erratic. You can do this. Onward!