He's at 27 Int and 23 Splendour, even to start. The Efreet are dumber than Keltham was when he first arrived in Golarion.
He cannot improvise true talk-control, that takes neuroscience he doesn't have and just can't infer that quickly without doing experiments, for he's not a god as yet. But the Efreet feel to him more like mechanisms than people. Dangerous mechanisms, imperfectly predictable, but not, really, people, except in the sense of having qualia.
He patiently negotiates their conversation graphs and pathways through time at minimum risk to himself, as is, of course, still some risk; but he's arranged for the 'risky' outcome to still be acceptable and that's not really that much risk.