Doubt between my new relationship

Hello, I am currently in a new relationship with me being 19M and her being 19F. She has a avoidant attachment. She is great to be with in person, but some days shes dry and distant over text, while she was super interested in texting me during the talking stage. I am worried that If i approach her in school again she will be distant and dislikes me. I feel like I am the one initiating in the relationship, convos, hangouts. How can I get closer with her? Shes never been jn a relationship and Iike her alot

TL:DR should i invest in this?