chome360,
Your potting mix seems to already have fertilizer included, but I did not see any analysis (NPK numbers). It is most likely insoluble. and you may need a boost to get the plants going again. I prefer Miracle grow General purpose to boost growth, for your situation (my mix for cuttings and plants under 1 gallon), 1 teaspoon per gallon of water, and spray the leaves (both sides) with the same mix. You should see results in days (yes days).
If you are looking to go 100% organic any balanced Organic liquid fertilizer with a 9-3-6 (NPK) ratio should work fine.
BTW I use Plant-tone or Garden-tone for figs, and you only need a small amount (1/2 cup) to inoculate the potting mix to get the microbes growing initially. The microbes do most of the work, breaking down nutrients and Limestone to make it available to the roots. You should then start to fertilize based on the recommended schedule after the potting mix fertilizer has been exhausted (in a month or two). I would also add at least 1/2 cup of Dolemite Lime stone per 4 gallon container if none has been previously added.
Good luck.
<Edit>
As a visual of the technique that I have been advocating, here is a current picture of a cutting that was taken from the mother tree on April 12, 2013. It is currently outside in full Sunlight and Rain, growing in a 5-1-1-1 potting mix, with Garden-tone and weekly feedings of Miracle Grow General purpose plant food (@1teaspoon per gallon). It has been bare rooted twice so that it could be up potted. Its approximately 30 inches tall from the soil line and starting to produce multiple branches, it has only been outside one month.