The blog of Michael Reed Gach PhD.at acupressure.com/blog/?p=2098 with a video explains that pressing on the point (GV 26) below the nose and above the upper lip can boost an inhale in a natural manner. No, I don't go along with Chinese medicine generally and in fact the treatment by an MD using supposed acupoints on the chest did not work on me about 20 years ago when I had asthma.
This radically different approach not involving inhalers, herbs or Buteyko or the James method sites.google.com/site/healt... the Bowen Technique (bowentherapyuk.com/asthma-r... seem well worth considering. Possibly with a medical doctor.