You keep it dry. Bone dry.
For more control I'd place it in a ziplock bag in a cool place indoors and let it do what it wants. When it begins to grow repot and water. If you're lucky it'll hold back until next autumn.
All of the forms originating from southern Australia, ie- Victoria, Tasmania, South Australia and WA fork only once. I'm surprised they appear to be so uncommon in cultivation in your part of the world.