He was forcing passes and thus throwing passes that he was less likely to complete and more likely to get intercepted. In particular there was a three week span where Geno ran a total of five times, threw 0 TDs and 6 Ints. The Jets lost all three games scoring a total of 20 points. In the 4 games that followed, Geno ran 5 times more often and the team went 3-1.
But Geno has never been a "running QB" so how do you figure him passing rather than running is him trying to become something? That is who he is. Him running is something new, not the other way around.