Anyone can tell me how to slim down? Till now lo is 8 months old and I still look like as if I am pregnant 2-3 months.

First of all, if you're breastfeeding, make sure you still get the nutrients you need. Then, choose healthy and well-balanced snacks (like vegetables and figs) and then eat little and often (grazing). If you need to snack between meals, snack on healthy fruit and veg.