Post diastasis repair 2cm gap measured via ultrasound (Photo)

Yes that seems like a reasonable amount. The scar tissue will relax over time and a portion of separation will return. Normal separation between the rectus muscles is generally 1-2cm. Additionally your abdomen looks flat and appropriate. No issues from my perspective

Dear Reliable352847,
I understand your concern. However, without a proper assessment, it would be difficult to determine what is wrong. It is best that you visit your plastic surgeon for further assessment or ask for a second opinion. Only after a thorough examination, you can get proper recommendations and advice.
Daniel Barrett, MDCertified, American Board of Plastic SurgeryMember, American Society of Plastic SurgeryMember, American Society of Aesthetic Plastic Surgery

Dear patient, a 2 cm gap between abdomins recti muscle is considered normal. In fact it would not be a definitiion of diastasis recti. Also in the pictures the abdomen looks very good and flat.
Hope it was helpfull

up to 2 cm is normal, But if you want to perform more plication it can be done by laparoscopy with the ELAP technique.
Endoscopic Lipoabdominoplasty (ELAP) is a novel surgical technique that combines liposuction and abdominoplasty (tummy tuck) with minimal incisions and endoscopic assistance. It is designed to improve the appearance and function of the abdominal wall by removing excess fat and repairing the muscle separation (diastasis recti ) or hernia.An internal corset (muscle plication) is performed .Only three mini incisions are used, a large wound is not made as in conventional abdominoplasty.