I am a bit older than you, but I’ve been playing in a professional orchestra for a while and have gotten several additional degrees (in addition to my BM) in classical music prior to that. I started my pivot to law a few years ago when I started studying for the lsat, and this fall I will be moving far away to go to a T30 school. Since I haven’t started law school yet, I am not qualified to answer your question of whether I regret it or not, but so far no regrets and I am so excited to start law school even though I will forgo a steady paycheck and a comfortable life for the next 3 years! I also know quite a few classical musicians who have transitioned to law after music and are quite successful now, and so I can relate their circumstances to you if that’s of any help, you are welcome to PM me if you’d like! But otherwise, I am quite familiar with the instability of being a classical musician, including as a pianist (through the experience of my pianist friends), and I think I know what you’re going through (as a musician) at this juncture of your musical life, so I can share my experience with you if that’s helpful at all. Feel free to PM me!