Rex,
There are no stupid questions. You may get a wider Australian audience by posting in The Pacific: General Aviation & Questions, but to answer your question. I agree that a massive reread is not required as presumably you have already done that in the last 6-7 weeks. I would do as you have said and concentrate on practice questions and then revisit those specific areas which you are getting wrong. Another option would be to use the CASA Learning Objectives and ensure you have covered all the bases. Don't forget to include those objectives associated with the BAK.
https://www.legislation.gov.au/Detai.../Html/Volume_3
Good luck!
Loro.