Take it back a notch and slow it down. We use real time, and unless the Drewish fleet was just parked right outside of Oscad's waters, it's going to take some time to get to Oscad.
Just so you guys know I'm not on either side so the outcome of this is up to you. Also Oscad is going to tone the anarchic back a notch if they survive the war, whereas Karknar will continue increasing relations internationally if he wins.