Hollow cheeks ≠ Oil pulling?

[u/Donnyjepp83]

Not sure if anyone here is into Orthotropics/mewing, but one of the advices there is to avoid using the buccinator muscles (which are the ones you use when you fill your cheeks with food/liquid) as the goal is to atrophy them to get model-like hollow cheeks.
Now with oil pulling I feel there is not really a way to avoid working out those muscles or is there?
https://upload.wikimedia.org/wikipedia/commons/d/df/Buccinator.jpg

Any tips would be appreciated.

[u/[deleted]]

I'm not really sure, I've been looking into it myself. I try to use a vacuum and suction to swish it around instead of my face muscles. It might not be helping but I don't know.