NP621

Just in need of some advice. I just finished my first clinical after a few months in health assessments. I just got my review back from the doctor and he basically did not think much of me. I got all good scores on professionalism and inter office relationships, but he said I was lacking a medical knowledge base and felt like I did not engage myself. After I had a bowl of ice cream, I figured that I did not agree with all of his assessment. My question is how can I show him that I am more engaged when he is so busy and basically walks out when I give him my assessment of the patient? Next, I have spent days pouring over medical knowledge and there is so much out there I have become stressed out!! I do have a knowledge base since I have been a nurse for four years, and I was just in assessments. We start disease management in the summer. Where do I start? I feel as though I am following the NP program successfully, but he expects I should know more. I would try and find a different doctor, but Preceptors are scarce. Thanks in advance for any advice ! :)