Shockingly, it's only been a week and mine has come off a lot. Way more than I expected. So I'm optimistic :)
The weight came off very easily for me. I was also breast feeding so I'm sure that helped. I was nervous the 40 lbs I gained would be hard to lose but was pleasantly surprised how fast and easy it came off. I am hoping the same thing happens with my repeat c-section in 6 weeks!