Which centre are you going to ? My kid attends the Kowloon Bay centre and they asked my kid to repeat the whole module. I also have a feeling that it is not neceesary. They just said that they want my kid to do the math faster.
My daughter have tried Enopi before, but I have switched to Math Monkey now and she is studying at Math Monkey Tsuen Wan. I think Enopi only focus on critical thinking only and Math Monkey has better balance and focus on critical thinking, word problems, general math, and their vedic math. My daughter loves going to math monkey because of their game based program and I see there is big improvement on her calculation speed.