Day 3 of NC, not sure what to do

My ex girlfriend and I broke up on Monday the 7th. We are both 18 ( I understand we are young, you are doing me no benefit by telling me I’m young and to move on). We had been dating for a couple months over 2 years, and were happy up until a couple weeks ago. I started taking my then girlfriend for granted, and suggested that we just start fresh in college, and focus on ourselves. She will be attending a college about 3 hours away from me. I was willing to visit her, it’s just I didn’t see what she meant to me until I lost her. She had wanted nothing to do with the breakup when I had mentioned it first, but decided it was best for her just a few days ago, and that’s when I didn’t want it.

I begged her for two days and pleaded she stay with me, but I have been no contact for the past 3 days. While I do acknowledge this could be a good learning experience for the both of us, it doesn’t change the fact that I don’t want her back. She still wanted me in her life, and was upset when I said I needed some time to myself after she broke up with me.

She will be moving in the 18th, and I will be moving in the 26th. My main question is, do you think the no contact period should still be 30 days? She will have been in college for almost three weeks by the time the thirty days is up and I will have been there for almost two. Should I wait longer to contact her? Should I contact her earlier? In the mean time I have been trying to better myself and find myself through this experience. Also, do I have a chance in getting her back? I blamed myself for the breakup, but it really was because we are each other’s only serious relationship and she has always been my ‘girlfriend’ so she wants to find herself.
Thank you in advance.