My school was the same way. However, you can generate interest in the program that you've selected by talking to others and by letting them know how good a deal you're getting. During the time I was BDCP, there were about 7 of us going Navy. We were definitely the minority but there is always someone who's interested....
I know we're not recruiters, but if you want the advance you'll need to earn it (or at least harrass someone who's applying already!)
P.S. - Stay away from the Amway tactics....
I'm a terrible BDCP salesman. Almost 2 years and no one is bit the hook; granted, I attended a college with the second largest NROTC in the nation. Still, no promotion for me.