Need help in no contact

Hello, my ex and i broke up almost three weeks ago. I did not feel alot as i was communicating with her and meeting up with her daily. We even went to a party together last week. But 4 days ago i read the article of getting your ex back and no contact. On the same day, i asked her to meet as usual but this time she was stern about how she does not like me treating her as my gf because we are apart. I said sorry and all and decided to initiate no contact. The following day i did not text her good morning but she did text me which i painfully ignored. We met at the school hotel but she was with her friends and i was in a ‘rush’ so i sat on another table and left. She texted me the same evening and asked me about some songs i had dedicated to her but again i ignored her. On day 2, i stayed silent and didnt see her in school but she texted me at night saying hi. I ignored her again. Yesterday was day three and we met and i said hi to them (She was with a friend) but almost left immediately. She did not text me yesterday or anything.
Might me not replying her texts but seeing her in school come off as rude.
Ps: I viewed her Instagram and Whatsapp status during day 1 and day 2. Was this wrong considering i am ignoring her and i am going through no contact.
Thank you, sorry for the long post.

If you want her back STOP IGNORING HER NOW!
No Contact does not mean ignore your ex. It means let her come to you while you work on yourself.
When she texts you good morning, just text her back “Good morning.” and say nothing more. Keep making her do the work and initiate the conversations. You keep your emotions under control.
If you want her back and you keep ignoring her, she will take the hint and stop trying.
She is making it clear that she is not ready for this breakup even though she says she is. You aren’t acting like she is your girlfriend, she is letting you treat her like she is still your girlfriend. It seems like she can’t make up her mind from what I am reading.
If she says hi, you say hi back. If she says good morning, you say good morning back. If she says “Can we talk”, you say “What’s on your mind?” Keep it casual on your part. Give the impression that you are just fine and not emotionally distraught. This will show strength and confidence, and nothing is more attractive than that.