Misdemeanor Expungement Criminal Records, Expungement

My jurisdiction is: California

In July of 2008 I signed a plea bargain convicting me of Resisting Arrest PC 148 (A) (1) according to my legal papers. My lawyer, who I no longer have access to for legal counsel, left me with a Misdemeanor Expungement packet he said could get my record wiped clean. Although I was put on 3 years limited probation, he told me after 1 year I could submit the packet to the court. My confusion is, when trying to fill out the form, it seems to me that I am required to complete my probation in its entirety before I am eligible for expugement. So my question is, if a minor is convicted of a misdemeanor and placed on 3 years limited probation, are they eligible to apply to have their record expunged before those 3 years elapse?