C-section pooch years later.

Did anyone else not get informed about using a bellyband/ waist trainer/ c panty after giving birth? My son was born 2 years ago and at that time I was a young momma. The hospital i went to was super shitty and I feel like my OB at the time was super dickish about me being a young mom. Can you use one years later to help with that dreaded pooch? I’ve been walking and have seen a big difference, but I still have a small little pooch that I would like to go away.