hi tnsigger,
Welcome to the forum.
Dormant wood is basically found on a stem that has lost its leaves due to cold temps.
Depending on how hard your first frosts are, you might want to take the cuttings sooner.
So let say, when your temps sink to -5°C/23°F at night go and take cuttings. If your temps sink straight under -5°C, go before that night .
Here in my Zone7, mid October would be a good time frame, to allow the wood to harden more, but not being damaged.
When taking cuttings try to get a whole branch - don't take tips cuttings only . That is don't take the very last 2''/6cm on several branches .
The whole branch can then be cut in 3 or 4 cuttings of 3 or 4 or 6 nodes each .
Long fingers and cold hardy ... Wild guess: Brunswick !
In Zone6 in ground, that would be a challenge for your fig trees. I would keep them potted and get them inside the garage or basement for the winter.
At Spring time, I would then bury the pots in the dirt for the roots to escape the pots and feed the tree more.
As I like experimenting, I have some trees growing like that this year. It was their first year - I still have hopes that some figs will ripen on those young trees ( root-shoots potted in 2014 to not compost them). I was surprised when I tried to move them around and discovered that they were root-anchored to the dirt ... I never gave them permission to .. oh well ... if I get ripe fruits from them, they could be forgiven :)