I (19 M) met my girlfriend (18 F) about two weeks ago, we quickly declared a relationship and it's the first time for both of us to have a romantic relationship.
She is into hobbies which I am not familiar with and she sometimes talks about them enthusiastically. I have no issues responding when texting, but I am struggling to respond when we are voice-chatting - which requires a faster response and often my response is short which seems uncaring.
One time, when she noticed me struggling to respond she asked if I was not interested in the topic. I was not but I wanted to know more about her and didn't know how to keep her going on her topic without responding perfunctorily and making me seem uncaring.
I'd like to prevent awkward moments like this from occurring again in the future, but don't know how I can react in situations like this. My goal is to show enough interest and keep her going about the topic without sounding weird, how can I achieve this?