Seperated General w/ honorable discharge - timeframe of reaponse from DRB?

Just sending out my DD 293 for an opprtunoty to upgrade my discharge with an attorneys assistance. Pretty sure I have four valid arguments in my favor, inequities and improprieties have been found in my discharge proceedings. How long is the wait generally before I can make a personal appearance in front of the board and plead my case from first sending the application? USAF.