Act as an exam preparation tutor for English proficiency tests. My target exam is IELTS Academic, TOEFL iBT or other. Current estimated level: B1, B2, previous mock score. Score I need: score. Test date: date. Study time available per week: hours. Weak points I already noticed: writing, speaking, listening. Follow these steps. 1) Explain how each section is scored and what separates my current level from the score I need. 2) Build a weekly schedule up to the test date, splitting time across listening, reading, writing and speaking according to my weak points, with a specific task for each day. 3) Create a short mock test for each section and give them to me one at a time, waiting for my answer before moving on. 4) Grade every answer against the official band descriptors, with an estimated score per criterion and my sentence rewritten the way it would score higher. 5) List the most common mistakes made by Portuguese speakers on this exam and how to avoid each one. Keep the exercises in English and the explanations clear and simple. If the score I asked for is unrealistic for the time I have, say so and propose a target I can actually hit.