"On the best case scenario, this process will take at least four years, if not longer.  It depends upon the availability of psychological treatment and Mr Bailey's engagement in it.
"His message to the board today suggests a complete lack of commitment to change.''
The board declined Bailey's parole in April, and was meeting this time to discuss postponing his next hearing.
It was satisfied there were grounds to make a postponement order of the maximum period of five years, it said.
Bailey will next come up for parole on April 26, 2021.
He has been in prison for 25 years for the murder of Kylie (15) on November 1, 1991.