Add these commands to your vocabulary often once he has become consistent with level 1 commands.
Anything less than the acceptable responses below the commands, banks 10 strikes to bottom per infraction at next convenient time.
Command: Now
Acceptable Response: Whatever you requested happens immediately on your time, not his. Your discretion on time frame of response.
Command: Do It
Acceptable Response: Do what is requested without argument.
Command: Sit
Acceptable response: Comes and sits beside you awaiting next instructions. This is to be used to discuss matters of concern for you that you need to address with him. Response time varies depending on what he is doing, and the severity of your need to discuss something. Punishment is discretionary based on response time and severity of need for command.
I love the progression of these commands. Gives one pause for thought.