Just to share my experience..
With the first child, although I was breastfeeding till 1.5 years old, I still couldn't lose the extra kilos.. finally went on the 7day diet that came out in The Clove about 10 years ago (but i kept the recipe) and lost the extra weight it. But it was hard... by the 3rd day, I was craving for food.... but after 7 days, it was easier and I went on 3 cycles of the diet..(meaning 21 days).

Then I had a 2nd child 4 years later... again was exclusively breastfeeding and working full time AND still couldn't lost the extra 7 kilos...after 2.5 years of breastfeeding, I had to do something about my weight. Then my maid ran away and I had to resign..eating late dinners and sleeping at 8.30pm with the kids..and putting on a few more kilos!
I went on the 7 day diet plan again but gave up after 4 days as the hunger pangs were unbearable.... maybe due to my age! hehehehe...

Then one night, I was surfing the net and discovered Jus Mate5 , didn't quite believe it would work but I gave it a try and if it didn't work, I would just lose RM200. I went on a drastic diet change (which I would't recommend to anyone) with Jus Mate5 and lost all the weight in 5 weeks. It worked for me and it was a hit and run situation for me because once I lost the weight, I got off the diet drink as I don't know if long term consumption will give any side effects althought the company claims that it's all natural ingredients. Best part it, I suffered very mild hunger pangs only 2 days during the entire duration unlike my experience with the 7 day diet.

I don't know how breastfeeding mothers get back their pre-prenancy weight as when i breastfeed, I tend to eat bigger portion.. hence, could never entirely lost all the pregnancy kilos.

Oh, anyone wants the 7 days diet plan, please PM me...