Can my attorney withdraw from the case?

Yes, most of the time.  In some cases a judge may require the attorney to stay on the case.  If a court case has already started, the attorney must file a motion to withdraw to be removed from the case.  Judges have the discretion to grant or deny the motion to withdraw and the client is usually provided an opportunity to appear at a hearing on the motion and advise the court as to the nature of the problem with the request to withdraw.