Protein shakes that DON'T contain B-12?

Just got off the phone with the doctor, discussing blood test results (first I've had in decades) and all's good (phew) except my b12 levels are too high.

She asked if I took any supplements, I told her nothing but protein shakes, and she said that's probably it. Apparently whey protein is super high in b12, and just one a day might have caused this. She recommended I stop drinking them.

My question is - does anyone know of protein shakes that DON'T contain vitamin b12? I'm vegetarian and I work out a lot, thus struggle to get my 140g through just meals. Many thanks ❤️