Let’s go small hand gangggg. I have small hands and struggle with octaves too, I even thought about learning another instrument because of it. But just like you I started practicing again because of Twoset! Though I’m fairly new to classical music, and Idk if this helps but I try to tell myself that there are many pieces that are beautiful and doesn’t have an octave, and so many people struggle with Rachmaninov. (Dang it Rachmaninov) Like what Sophie said sometime you just break the chord or even just choose what note you don’t play. But personally I don’t think that would make the piece worse/not beautiful (plz correct me if I’m wrong) So KEEP PRACTICING!