When you have years of less-than-optimal tissue adaptations to clear through it takes real time to undo. Only with the application of real intent and a commitment to consistency will you see a change. That change might be almost negligible at first, but over time the effort you put in will yield better and better results as the tissue adapts bit by bit to the change you’re imposing, and as you get better and better at implementing your mobility work and zeroing in on what exactly is needed.