I'm afraid you can't sponsor him until five years have passed since you were sponsored in yourself. This is from the 'criteria' section, under
Your partner's support, here.
https://www.immigration.govt.nz/new-...s-visa-holders
Your partner won’t be eligible to support your visa, or a later residence application, if they have:
supported a successful residence application for more than one previous partner
supported a successful residence application for a previous partner in the last 5 years
included a previous partner in a successful residence application in the last 5 years
have been included as a partner in a successful residence application in the last 5 years.