I am not familiar with the practice you've mentioned.
It is just as easy to relax the body by working with both nostrils in pranayama, or both using Ham-Sah. Deep breathing, whereby the diaphragm expands naturally and without stress, will produce greater relaxation, since with more oxygen intake, the brain, nervous systems, and body become serene and calm.
Having both solar and lunar energies from Ida and Pingala will aid in calming the vital body, which will help the mind to settle as well.
For thirty years I sought God. But when I looked carefully I found that in reality God was the seeker and I the sought. -Bayazid al-Bastami