dear Boriss,
I agree with my colleague that you should not be stretching.
In my experience people suffering from Ehlers Dahlos have to learn to know their body well.
Part of this is learning to maintain good posture in rest and when active. Check your posture
for instance just before you need to lift something, but also during walking and sitting.
This is something your physio can help you with.
Important is also to learn how to "know" when you are crossing a physical border... can you
do this without harm or not?
I wish you well.
Esther