I think most fig trees want to be shrubs. My panachees and my LSU Gold have one growth tip, one trunk and show no signs of doing anything but reaching to the moon. I haven't pinched them, either.
VDB a whole other story! That one wants to bush out. Each variety has it's own growth habits.
I can't help you with winter. It appears we don't have it.
I do know that when you prune, the tree should be dormant (lost it's leaves), and you can store the cuttings wrapped in damp stuff in a cool dark place. They will hang in there and in the spring, you can then put them in a warm place and they will root.
A tree is like a dog. You train it. It obeys. You don't, it takes over!! Pruning is necessary to get the shape you want. Sacrifice some lower limbs to cuttings and air layers and let your tree be a tree.
Hope that helps! Had 2 fantasy football drafts today, so mind is a little blitzed!
Suzi