Notice of the review hearing shall be given to the minor, and his attorney if the minor has retained counsel, at least six days prior to the hearing

If the minor has not retained counsel at the time of the notice, the chairman of the county board shall immediately appoint counsel to represent the minor. In no case may the minor's attorney be a person who, in the previous two years, has advised or represented the facility or program to which the minor is committed or who would otherwise have a conflict of interest. At the time the notice of hearing is given, the minor and his attorney shall be informed of all evidence that will be considered at the review hearing. Any evidence subsequently discovered shall be immediately transmitted to the minor and his attorney. The rights and procedures applicable in relation to an initial commitment hearing shall be applicable in relation to the review hearing except that a petition need not be filed. The board of mental illness may order the continued involuntary commitment of the minor to the same or alternative placement or program for a period not to exceed forty - five days if a majority of the board finds by clear and convincing evidence, supported by written findings of fact and conclusions of law, that the criteria in § 27A-15-37 are met. If the board orders the continued involuntary commitment of the minor, it shall immediately notify the minor and his attorney of his right to appeal as provided in §