I agree with quietmind. Your pdoc already read the 5 page letter, so it doesn't seem to be an issue and is probably even appreciated. I have sent tons of pages to my therapist and she has never said I was being demanding. She says they help her understand what's going on, and on my end, it helps to get things across in that way.

This does not look anything like misbehaving (I don't actually think that concept even fits when someone is trying to get help). You are, like quiet mind said, finding a creative way to get around internal barriers.