LEAVE the tape until it completely falls off on its own ... It may take a while, mine was almost all the way off and i pulled it and when i went to the followup the dr could tell and put a brand new piece on it (after he yelled at me)
It stays from 1 second to 20 months
It should come off when the wound is healed or ask or perform more tape
It's normal to feel some discomfort, however check with a expert-doctor if worsen.
dont worry what your dr failed to tell you is the tape should fall off when its ready let it fall of on its own