I think that is one some try, but it could take up to 3 weeks to work, if at all.

Here is a podcast from Dr. Christy Huff, someone who had to taper a benzo and used propranolol, which is similar to buspirone, but causes low blood pressure not high.
https://open.spotify.com/episode/4wJ3XVk7oKOcXhH3e7neqx