I found some things very helpful 1) breastfeeding 2) drinking more water so that my tummy had less space for unhealthy snacks 3) baby wearing and going for walks 4) exercising Managed to lose all the pregnancy weight
Hi Mum, Do try to have regular yoga or running sessions so that your body gets used to this regime. Also, have lots of water. Gradually it will improve
https://sg.theasianparent.com/saggy-belly-skin-after-pregnancy
I bind and use cream do sit up it goes away after 1year