Read Aloud contributes to both your speaking and your reading score, which makes it the single highest-leverage task in the test. It is also the easiest to practise badly.
Use the preparation time to chunk the text, not to read it silently at speed. Mark natural pauses at commas and clause boundaries. Three to five chunks is usually right for a 60-word text.
When the microphone opens, start within one second. Silence at the start is treated as hesitation. Keep a steady pace of roughly 140 words per minute — slower feels safer but reads as unnatural to the engine.
If you misread a word, do not go back. Self-correction costs more fluency marks than the original error costs pronunciation marks. Keep going to the end of the sentence.
Record yourself daily for two weeks and compare the first and last recording. Fluency is a motor skill; it improves with repetition, not with theory.