What you need for faster results is a postpartum belly band to shrink your belly. I used the Original Belly Bandit which was designed specifically for a woman's post-pregnant body. This basic belly wrap will help tighten and shrink your belly, waist and hips post pregnancy.
It also provides comfort for mothers who had C-Section. It also accelerates healing and helps minimize stretch marks.
Here's how to check what size you are.
This product shows results. I started wearing it a week after my delivery and it helped with the pain, and after wearing it for 4 weeks my belly has visibly shrunk. It takes a little getting used to before you get the hang of it.