1 year postpartum body still the same😒😒😔

Hello all. Firstly a very big thanks to all the ladies in this group, for advices and responding to the questions. It means a lot🙂 My baby turned 1 year last month. My pre pregnancy weight was 125lbs. After pregnancy till 9 months it was 160lbs and now iam 140lbs. But i still look like 3 months pregnant. I neglected my body by not exercising and not even using belly belt after my ceserian delivery.. Now i regret. i still have bump at my incision. I decided to loose weight n be strict on my body n diet. Any suggestions or tips to loose belly bump and weight? Also does belly look like this forever if we don't use belt few mnths after delivery. Pls respond ladies TIA.