15 minutes is the lower limit for my psych NP. The first visit was 90 minutes, followed by 2 visits that were an hour each (all two weeks apart), before dialing it back to a half hour 2 weeks apart, and a half hour a month apart, which is where I am now. She will only go to 15 if we both agree that I am stable. She didn't go to a month until I was also seeing a therapist. I was not new to a diagnosis; I had been in the denial part of the cycle I keep going through (and hope to break). My first diagnosis was 23 years ago and I have seen lots of pdocs and tdocs over the years. She still followed the new patient protocol because i was new to her.