You read what went wrong. Now practise what goes right.
The Six-Hour Silence showed you what happens when a parent finally stops talking and starts listening. The Unforced Error showed you why the things you were doing were pushing your teenager further away. Game, Set, Life is where you put both into practice.
This is not a summary and it is not more reading. It is the doing. Every principle from those two books is laid out here as an exercise you complete in real time, with your real teenager, in your real week.