My son was born here in Melbourne Victoria & I want to change his citizenship & passport from New Zealand to Australia.

After giving birth on 11th of September 2016 I had plans to move back to New Zealand. I (mother) am a New Zealand citizen but my partner who is the father to our son is an Australian resident & citizen. I applied for a New Zealand citizenship at birth for our son but now we would like to change him to an Australian citizen with an Australian passport.