When dedication is not the issue, which I know in your case it is not. Injury management is the number one factor for success and longevity in jj. Good luck, be smart, and just drill slow and technical. Nothing live. As soon as you feel that familiar tweak that makes you say "Oh shit", you just set your rehab back two weeks. This is a delicate game, made even more difficult to those who love to train/make shit worse.