I notice my VCD often enough that I don’t feel like I’d call them episodes personally. More like it’s always there but certain things trigger it more or I could have it be flares for a period of time. I also have chronic sinusitis & allergies so I typically have trouble breathing in general so thats “normal” for me. I would recommend going ahead with therapy and figure out what works for you to see if you do notice a difference in your breathing. It will most likely get at least a little better since they’re closely related. Hope you find something that helps.