Personally I'd go a step further and say if you want to really read the book together you should read it together on Kindle and make shared notes and highlights

Personally I'd go a step further and say if you want to really read the book together you should read it together on Kindle and make shared notes and highlights as you're all reading so you can note where others, or you, are struggling. This would truly help it become a collaboration moreso than a retrospective.