Doing appropriate exercise will not only help to heal diastasis recti but also the back pain to poor posture caused by diastasis recti,it also helps in toning and strengthening your pelvic floor muscles there by you can prevent urinary incontinence issue, hernia etc.. But it's not too late. You can start doing correct exercise under the guidance of physiotherapist. So that they guide you if you do any mistakes that makes condition worse.

Strengthening abdominal muscles the right way helps to recover from diastasis recti. Do not try to do crunches and all, it will worsen your condition. Please consult me online for the proper exercise guidance

You should go for post natal exercise sessions. You have different levels of exercises from basics to advanced level.

You should yo start abdominal exercise

This is basically gap between two medial sides of the rectus abdominis muscle . First your physiotherapist who is trained in management of postpartum muscle weakness will assess degree of diastasis recti. Physiotherapy can make a program for improvement in pelvic alignment and toning. By few specialised design exercises you can have permanent solution. Till you should follow following things

The key to healing diastasis recti is rebuilding your core from the inside out. You need to strengthen the transverse abdominis (TVA) muscle, which is the deepest abdominal muscle and can provide support for those muscles that have been stretched. Below exercises will help Umbrella breathing with kegel. Pelvic tilt on with hands and knees. Kneeling with leg and arm extension. Lying back and toes and tap on. Single leg reach. Leg extension with weights. Also many are there but you need to perform this with expert supervision at first then you can practice this at home daily.

The key to healing diastasis recti is rebuilding your core from the inside out. You need to strengthen the transverse abdominis (TVA) muscle, which is the deepest abdominal muscle and can provide support for those muscles that have been stretched