Air Force Dual Enrolling Question?

I'm going into college as a sophomore, and starting Air Force ROTC this year. My recruiter told me that it would be best to dual enroll (101 and 201 classes). I was just wondering, how far behind would I be with all that? I don't want to fall too far behind in 201 and not be the only one not knowing whats going on. If anyone has done dual enrolling, or know how it works, could you please provide me with some information? Thank you for your time.