Hello! I am also a current student, and I just wanted to chime in since I remember this time being incredibly stressful. If you haven't heard back by now, don't give up hope please. I remember getting pretty down last year because a bunch of people had been invited for interviews, and I hadn't heard anything. It turned out that they just hadn't sent out the invites for my track, so you never really know what is going on behind the scenes.
Here's my two cents about interview prep if you are feeling lost because I know I did. Really take time to get to know yourself and identify important stories from your life that highlight your values/strengths/areas of growth. You have to be able to convey who you are to the interviewers. If you don't know yourself well, it will be hard for the interviewers to get to know you. Also, know SU's values and how your values match up with them. I spent a lot of time preparing and practicing for my interview. I literally searched these forums and other sites for common questions asked in this type of interview. I then had stories from my life that could answer these questions. I think this prep had a lot to do with me getting in on my first try.
I did a ton of soul searching, and I was very open and honest about my life and background and emphasized what I had learned and how I had grown. Remember that everyone applying is smart, has good grades, and most have healthcare experience. How are you unique? Emphasize what sets you apart. Don't forget to look at your personal statement too.
I am linking part 1 of a 2 part video that really helped me get in the right mind set for my interview. It is for medical school, but that is only because I couldn't find one for direct entry NP programs. :) They are long videos, but I think they are totally worth it. I hope this helps someone out there. I believe in all of you.