I'm impressed! Nothing as organised for me, I'm afraid. I read the chapter through again, and sometimes there will be something which leaps out at me, and if this is the case, I will go through and gather my thoughts together in a methodical fashion. At other times I simply read what others have written and may respond to their thoughts, or if I have nothing new to add, let is pass by and just enjoy reading the posts. But I also anticipate favourite chapters and lie in wait for them to come along, like a Tiger with my Tolkien claws sharpened.
I think some chapters attract more comment, and if this is a particularly popular one, it can be hard to keep up with everything and create a coherent post yourself! Still, with your approach, there should be no problems with that!