I would second what @PowerSupply-72837A said.
And, if you have been following the rubric and best documentation practices, then your notebook entries are already done and “signed” and shouldn’t be changing anyway.
You can add a summary of design evolution, final robot overview, and appendices with the well organized and commented code listings, joystick controls layout, wiring and pneumatics diagram, etc…
However, you shouldn’t be going for the maximum size of the notebook.
Almost everybody competing for awards at the Worlds level already have in their notebooks everything that rubric calls for. And, at this point, judges will actually look for the most clean and concise notebooks, that have all important pieces of information, while minimizing fluff and clutter.
Also, notebook is just a part of your score that goes into deciding the award. Your pit interview and presentation is extremely important.
You should be able to demonstrate to judges that you are not just randomly coping into your robot bits and pieces you’ve seen on the other robots at the competitions, but are following robust iterative design process.
First, formulating the strategy and goals based on game rules, choosing appropriate robot design, and then observing performance of yours and other robots at the competitions to refine your strategy and design over several iterations.
If judges ask question about your game strategy or point to a specific part of your robot you should be able to explain how it evolved as to be that way as a result of constant testing and refinement, backed up by notebook entries with alternative solutions you considered and rejected or tested, liked, and took time to improve. A small poster or folder outlining design evolution of your robot may help, but don’t go overboard on that.
You should practice this interview/presentation multiple times in front of your parents, teacher, and in front of the camera to record and watch yourself later.
You will need to be ready to present a short (~5 min) or (~10 min) pit interview version as well as longer (~15 min + Q&A) version in case of the second follow up interview.