Pollock, 73, had pled guilty over the boy's death and was sentenced to six months' home detention, 100 hours' community work, disqualified from driving for three years and ordered to pay $5000 reparation.
He later successfully appealed part of the sentence, meaning the three years' disqualification was quashed and a period of 18 months' imposed in lieu.
The council said it would not comment further until the court process has concluded.
After his death, Uetaha's family released a statement mourning their "beautiful wee boy".
"Uetaha had an amazing love of dinosaurs and regularly slept with a toy one under his pillow. He was a boy with a mischievous grin who was loved by everyone. He generally started his day with a Milo and, of course, the cheeky grin meant he got his way with almost everyone, especially his nan (My Love)."