advice on EDT phase 2

I just finished EDT phase 1 and I loved it. I want to start phase 2, but it seems quite similar.My question was should I just start phase 2 or should I do someting completely different like HIT for a few weeks to avoid adaptations and diminishing returns?

why reinvent the wheel? progress to EDT2. And why in God’s name if you did go elsewhere would you go to (s) HIT