You typically need a 30 to 60 day dormancy if you are replanting recently harvested tubers.
You may be able to shorten that to 20-30 days by refrigerating the tubers. Once they break dormancy, it is typically 3 weeks before they will emerge, then you would need to calculate out your number of days until a frost. In an area with frosts late in the year, you could do this.
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