Post c section

So I always thought that C-sections as an excuse to have belly bulge was a cop out. Fast forward to baby number six via C-section in 2015 and baby number seven by repeat C-section in 2016. Nine months post C-section I am nearly back to my prepregnancy weight and doing the same Abdominal work that I have done before with continued bulging in the lower abdomen. I have looked online for specific exercises to target C-section bellies but was wondering if anyone had any success with any specific program designed for this problem?