Diastasis recti after abdominal surgery- ware are my options that could improve the diastasis and bulging? (Photos)

I'm a 20 y/old female (5'4", 115lbs) that had emergency surgery 8 months ago due to a problem with my ileostomy, which I've had for 10 years without previous complications (I have IBD). Before the surgery, my abdomen was flat but now it bulges out significantly. An MRI found "DRAM with a defect of 4.2cm in diameter containing nonobstructed small bowel loops at the level of the umbillicus." Do I have any options that could improve the diastasis and bulging? (my ileostomy won't be reversed)