Why are you trying to reset the CBS (condition based service) interval early? See the 3 criteria below. Ignore pressing the START button 3 times (3 times is for newer G chassis BMWs)...on the F chassis BMWs...you only need to press the START button TWICE (foot OFF the brake pedal).
It's set to alert you at 10Kmiles/12 months (whichever comes first)...if you want to change your oil more frequently, simply change your oil and let the CBS system continue to monitor accordingly. Then when you get the alert, it will probably be time to change your oil again (using your shorter interval)...at that time you can reset the lights.