move in closer, but far enough to prevent the iconicans/eldritches from peeling off ships to attack at you. Try to engage both at the same time, if you have to. primary goal is to reduce shuttle flight time between your ship and the dreadnought.
it would probably be best to have the dreadnought between you and the 13-mile long ship.
then tell the captain to board a shuttle and prepare to jettison off and return to the Blade. have him wait on your mark.