Try to keep him distracted during the feeding time

He felt secure in your arms plus it's addictive, that's why he is doing so. Use some red nail paint of good quality on your breast( a few marks) and tell him that you injured yourself and act like crying whenever feeding him. Babies can't see their mother crying. And if he is sleeping while asking bm then put some water in bottle and make him drink and later you can told him that milk tastes bad because of injury. Also make him spend some time a little far away from you or in another room with someone else in the family so that he can be well distracted. Hope this will help you.