Then you should be fine. I would rather do a 1200 mile service at 560 city miles varying RPMs than at 1200 only highway miles at 3000rpm. Better early than late. Just take it in for another oil change after 2-5k and you will be fine. There will be high concentrations of wear-in metals but just remember that most cars don't even get an oil change till 3-5k anyway.
M3 Sedan - AW/Black - 6MT - no moonroof - no folding seats - RAC RG63 - clear bra by Omega Werks