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

My son took his PSLE this year, and I have another boy taking his next year (so speak about stress)! What I found is that it's good to start early, that way you won't need to get worked up nearing the exams. Your child should be confident, cool and collected at that time. Slow and steady! All the best, don't worry too much.