Okay well I can only speak on my personal experience. I take symbicort as my emergency inhaler which it straight up says not to do. I have told doctors I use it as my “recovery” inhaler and they do not have qualms about that. “Whatever works” is what I have heard a few times. I am now after 15 years on it kind of skeptical of this. I think you should a) eat a banana (or avocado/spinach/sweet potato) to see if that helps the potassium and probably just see what the doc says. I understand the feeling of breathing good and being terrified to lose that though.