Definitely doable.

In addition to changing the tempo by 2/3 you also need to reduce the chord durations by 1/2.

Problem can be when you do the math on the tempo change and it comes up with a fraction, because you can't enter fractions for tempo in BIAB.
I asked if there was a workaround for that back in 2018 and Floyd helped me out:

https://www.pgmusic.com/forums/ubbthreads.php?ubb=showflat&Number=491560#Post491560