Prosecutors and Bieber's attorney told a judge at a hearing today that they need three more weeks to determine whether the case goes to trial or is resolved with a plea deal.
Another hearing was set for August 5 for the 20-year-old singer.
Bieber was arrested on January 23 in Miami Beach, Florida, after what police described as an illegal street race between Bieber and a friend.
Alcohol breath tests found Bieber's level below the 0.02 limit for underage drivers but urine tests showed the presence of marijuana and an anti-anxiety drug. Bieber was also charged with driving on an expired license.
Bieber did not attend the hearing.