For example, Guérin, C., Reignier, J., Richard, J.C., Beuret, P., Gacouin, A., Boulain, T., Mercier, E., Badet, M., Mercat, A., Baudin, O. and Clavel, M., 2013. Prone positioning in severe acute respiratory distress syndrome. New England Journal of Medicine, 368(23), pp.2159-2168.

They appear to be doing it in this video:

https://www.youtube.com/watch?v=rfkbv_WQtn0

That isn't specifically a new thing, it has been shown to work in the past.