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.

I put on 20kg during preg abs after that did not lose much and I've been gaining weight!!! Someone ever asked me if I'm pregnant again when I'm carrying my 6+ month old boy !!! I find that irregular meals is causing me to put on weight even though I'm not eating a lot ... N of Coz failure to exercise :(