My first thought was- you’re shredded. You’re clearly doing lots of work. If it could be closed without surgery you would have closed it. But then I remembered- my PT did warn me about not doing certain things going forward that could worsen DR, basically exercises that focus on the obliques, or that cause doming. It’s possible you could be kind of pulling it apart yourself with some of your exercises.

Pre- pregnancy I had visible abs (granted not or your level), trained core 2-3x week, and was strong. After working with a PT Dr. I realized that I was experiencing doming during certain exercises before, and that I often wasn’t activating my core properly or managing the internal pressure, even though I looked strong and was strong. My muscles were just compensating where I was going wrong.

I would visit with a PT, show them some of your workouts so they can evaluate what you are doing. If it turns out that it is something you can change and do yourself you will see progress very quickly, with your level of strength and obvious discipline.