I don't know definitively. But I am growing selected young plants indoors over the winter and will force dormancy in late winter or early spring. The number of hours that is often quoted for dormancy/chill hours is 100 -300, that is 1 to 2 weeks total time.
I plan on reducing water and putting the young plants outdoors in spring, when the temperature is in the 30's to 40's (at night) to induce dormancy, which I will maintain for 3 weeks.
There is also the comments about "over fertilizing" figs which "reduces fig production and promotes vegetative growth". I would think that this would be a good thing in a young potted plant, producing the most growth possible. I am aware that part of the reason for this warning is to also allow for hardened (lignified) wood for winter dormancy, but with proper management and planning the air temperature should never get below freezing (growing indoors or protected environment).
Note: Several of my young plants, which are currently growing indoors, from cuttings started in summer, are already producing fig embryos, which will be pinched.
Edit: Growing the plants indoors and over fertilization would only apply to young plants, to get a head start for the next growing season. After a healthy young plant and shape is achieved the plants should be grown with best cultural practice. I plan on growing the majority of my fig trees in ground.