Moving to Osteo as OP is still a med student.
From my own personal experience, I hated every rotation 3rd year until about March. It was frustrating to see my classmates liking multiple fields when I couldn't even find one. And then I suddenly I found myself on a rotation where a 12 hour day flew by and I felt like I was good at something, and actually wanted to study because I liked it so much. The rotation after that was even better. Just give it time, keep an open mind, and you'll figure it out eventually.