How does New kid born outside Portugal get enrolled in ARI application

We have a bit of a Unique situation so hoping to get some idea

Golden visa applicants
Applied in 2021, wife husband, kid and main applicants single parent

Main applicant got card in Oct 24
Spouse and kid got card in Mar 25
Parents biometric is in Apr 26

We are planning a trip in January for 3 of us to complete 14 days stay requirement to apply for citizenship in late jan or early Feb (before 5 year mark)

Expecting another kid in Aug 26 and we don’t want to give birth in Portugal, mum just wants her family support during last trimester and delivery.

I am guessing once the child is born, we will add to ongoing golden visa application but how will the citizenship application for new kid play out?

I am meeting with lawyers in 10 days but hoping to find some basic info to prepare myself for questions. Thanks in advance