When should we start preparing for PSLE? their syllabus looks so tough esp maths, im starting to worry!

I started on the first week of PSLE year. I got exams from different TOP schools with answer key across all Subjects and had my son answer the exams Everyday again and again. Repetition becomes a habit and habit of answering allowed my son to learn and retain learnings for the exam. He did well during his PSLE