I gave myself until the 3 month mark to start to lose the baby weight. I had put on 24kg while pg. Then, once DS was 3 months, I started to eat healthier (no special diet, just cut out cake, chocolate, junk foods, etc) & went for a walk with the pram most days (maybe 3-5 times a week). Also, I have been breastfeeding the whole time. I have lost 22kg of the 24kg. But it probably took 6-9 months for it to all come off.

Walking with the pram does give you some great exercise - especially if you choose a hilly route - and you will have the added bonus of 2 kids!!

Going to WW sounds like a good idea if you want more help with the eating side of things.

Good luck Tan! Don't stress if it takes a while - you've just had a baby!! (I look back on those photos of the first few months and think "yuck" - but I also know it came off eventually!).