The method of multiple VK healing practised by you is good.
Please do VOB on shoulders for 5 to 7 mins three times daily or at least twice.
When there is shoulder pain or frozen shoulder, it mostly indicates
"resistance to change or something new" .
It may also indicate that the person feels
"baggage/burden of responsibilities to be fulfilled"
Thats why VO was suggested to you in earlier post , where you will be sending continuous energy !!
Also if you know his surroundings, check if there are any such emotions with him. Send energy to that situation….and ease his emotions.