Shoulder internal rotaion mobility

This might be slightly off topic but anyways.

 

I was at my physio today checking up my right shoulder which has been kind of irritated for the last weeks. The verdict was that I had terrible internal rotaion mobility in my shoulders. 

 

Is there any prefered mobility drills/stretches for this?

 

 

all the hbp progressions and RC progression, talking about IM's, provide the necessary internal rotation strength.

I think most people into F3-4 HBP work are doing most or all of the IMs on a weekly basis at least. Don't neglect any mobility, but definitely not these

So I should go ahead and buy F3 and 4 just to get hold of the mobility even if I am at F1-2 at the moment?

F3-F4 for hbp cover the active mobility part to balance excessive internal rotation. Btw if you do not have necessary range of motion on the antagonist muscle the progress will be very slow. f1-f2 are more oriented to create range of motion for internal rotation, then f3-f4 prepare you to actively explore them.