"I guess, you are right. But it is not easy...
Dealing with chronic illness is hard, especially if you practice Yoga. Often one expects that doing Yoga will remove all diseases. To see that diseases can come even if you practice yoga, might be quite…"
"Sukhasana Sitting Posture with a belt. This variation will help remove pressure from the knees. Alternatively one can support the knees with one pillow oner each knee. Very helpful for anybody with stiff hips."
"Preliminary Exercises to develop hip flexibility for being able to do Meditation and Pranayama more easily.
Video is in German - but the visuals are easily understood. You might want to skip the first 45 Seconds..."