Hi Richard,
I'm not sure when you should expect fruit there in Southern LA, but here it produces fruit early. Main crop (it produces figs on the new growth) primarily, and up here I get ripe fruit by August, with small figlets forming in late May / early June. (But this is zone 5, and my trees are just making their first leaves now). It's a fairly prolific producer for me. So if yours is really RDB, on a tree that size I'd think you'd have unripe figs there already. Regarding your question about fertilizer: if you gave it fertilizer with too much nitrogen, that can suppress production of fruit. It produces wonderful top growth (leaves and stems), but has been known to suppress production of figs. Fertilizer in itself isn't bad... just if it's too heavily weighted toward nitrogen. (The first of the three numbers in a fertilizer designation is for nitrogen, e.g. 5 - 10 - 5). Good luck with your tree.
Mike central NY state, zone 5a