Magistrate James Morton reluctantly granted another adjournment in the Shane Parkes case on Thursday morning.
Mr Parkes, 35, is accused of running over his son with a jet ski while on drugs in 2016.
The accused has been unable to enter a plea, as the prosecution has not handed over all of the evidence.
The defence team is mainly waiting on statements of paramedics who attended the scene.
The case was slowed down by patchy administrative work by the arresting officer, the court heard.
Magistrate James Morton said he found it “very disturbing” the arresting officer had “not done what is required of him", and was slowing down the legal proceedings.
He made it clear to the court, that this would be the last adjournment he would grant and acknowledged the delay had nothing to do with Mr Parkes.
Mr Parkes case will be before the Mount Isa Magistrates Court again on May 31.