British Citizenship for child

Hello everyone, I have a query regarding my child's application for British citizenship application.
Me and his mother ( Divorced after child birth ) are naturalised British citizen.mother naturalised in Sep 2018 and father in Jan 2019.Child was born in EU Member state ( Polish Citizen ) in 2014 and moved to UK 6 months after.He is in school in full time education.
My question is:-
1) Does the child need to apply for PR or register under new Eu registration scheme?
2) Does the child need to go a normal route of registering as a British citizen ( MN 1 ) without having to do anything from question 1 or after acquiring PR ?
3) Is the child eligible to apply for British passport straight away without having to register or acquire PR ?

Any inputs will be much appreciated.

1) Does the child need to apply for PR or register under new Eu registration scheme?

PR is required

2) Does the child need to go a normal route of registering as a British citizen ( MN 1 ) without having to do anything from question 1 or after acquiring PR ?

Register under MN1 after PR is granted

3) Is the child eligible to apply for British passport straight away without having to register or acquire PR ?

No as the child is not British