Thank you so much for posting this Gabe. I am having an almost identical experience. I have had this a long time and no one can figure out what it is. I can't figure out what causes it to pause and what causes it to come back. I remember my mother having this same type of thing. She is deceased now so I don't know if she ever had a diagnosis. I have an inhaler but it does not help me to get a deep breath. I have to try and yawn multiple times to get one deep breath. I can fill my diaphragm with air so it looks like a deep breath but that air never completes the breath. I will look into those breathing exercises. I had the same issue with low iron and I drink beverages fortified with B12. Please let me know if you learn anything else.