Not really possible to say. Fingerprints are for criminality, and you can receive a second request after it expires whether security has concluded or not, and it all depends on the security screening : if it's finished, you're very close to the finish line, if not, well, the fingerprint request doesn't change anything at all to your timeline really. But in general, most people here have gotten to the finish line in 2.5 years or so, so you're getting there...