Twitter Profile effect

Question

I'm trying to create the Twitter Profile effect. I attach you the effect: https://streamable.com/bj07t.

I have this configuration:

UIView
   UIScrollView
      UIContainerView -> TopView
         UIView (where I add the views for the navigationBar and username) 
         UICollectionView (The number of items will be variable)
      UIContainerView -> DetailView
          UIPageViewController
              UITableViewController

I use the same UITableViewController to add all types of information that I have to show(collectionView types). I will reuse this UITableViewController.

I have two problems with this effect:

1. What constraints should I add in both containers?
2. When I have to change the TopView height, I use the function: func scrollViewDidScroll(scrollView: UIScrollView). But I don't know how to change the DetailView height because I have to change this information in the MainViewController and this information will be in the ChildTableViewController (MainViewController contain the PageViewController and PageViewController has ChildTableViewController)

Thank you for your help.