Looking in my RHS book for fig propagation, it says "take hardwood cuttings in autumn and put them in a trench then, when they root, leave them to develop until the end of the following growing season when they can be transplanted into their final positions." As yours are now leafing up, see if any roots are showing through the bottom of the pots. If there are, just pot them on into bigger pots; if not, you could risk taking one out to have a look or just leave them until later.