Suggestions on stomach area!

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I have lost about a total of 17lbs. I am happy with my size now just trying to maintain. However, my tummy is not improving! It looks bigger as I lost the weight! I had a baby 2 years ago w/ a c-section and it is taking me forever to loss the stomach! I don't mind walking/running and I also have a tread climber. But I hate doing actual situps!

Any other suggestions to get my stomach down?