Bain Test - How to prepare?

Dear community, hope all of you are doing great,

Next week I will take the analytical test at Bain (Latam Office).

I was told it has two parts:

1) GMAT questions (Data Sufficiency, Problem Solving and Critical Reasoning)

2) Written case

* I have only one week to prepare, so it would be really helpful if you could give me some guidelines/tips on how to prepare efficiently

- For the GMAT questions I have an Official Guide, but given that there is plenty of questions, any tips on how to practice? just doing questions after questions or do you recommend a specific approach? 

- For the written case I have a sample test, but do you have any other recommendation?

Thank for your help!!