One thing you might want to try is to knock off all the figs on the young trees. The fruits use a lot of the energy that the tree could use instead to grow in size. Next year, your harvest will be larger with higher quality fruit. Also, some varieties just taste nice right away in their first or second season, and others take a few years to develop fruits worth eating.
Sometimes, young trees just need a while to get started, particularly if they've been introduced to a new growing environment. I've had rooted cuttings that only put out an inch of growth during their first season and then stopped all activity for several months. Now, in their second year, those same cuttings have put out 2 - 3 feet worth of growth.