Multi Page Form Architecture

Question

I'm trying to build a system to create forms with multiples pages. My approach was to separate it in three different parts.

1. FormPages: The different form pages (Each one will have its own logic to validate fields).
2. ProjectFormContainer: The container page that holds the pages inside a Navigator.
3. MultiPageFormController: A controller to manage the navigation between form pages.

I've managed to make some progress adding to the ProjectFormContainer a ChangeNotifierProvider of MultiPageFormController but I'm not sure how to connect the individual formPages logic with the rest of the elements and what's the best way to make a decent architecture for this model.

I hope you guys could give me some advice. Thanks in advance!