If you provided the existing code along with a sample doc it would be easy enough to provide you the relevant code modifications. In the absence of that, your code could cycle through a collection of Content Controls and create a function that processes each ticked CC based on the page it resides on.
Code:
Sub ProcessPages()
Dim aCC As ContentControl
For Each aCC In ActiveDocument.ContentControls
If aCC.Checked Then
MsgBox "This page has a checked CC: " & aCC.Range.Information(wdActiveEndPageNumber)
End If
Next aCC
End Sub