I’m sorry you’re going through a difficult time with Toby and God knows we are determined to win. Have you tried calling the nurse? I think it works faster. Also I only do once a day until I can tolerate it better. My doctor said it’s better than not doing it at all. But I always check with my doctor before I make any changes. I believe the best thing for moment is to speak to your dr or nurse especially since you are having difficulty breathing! We are all going to have a different reaction to Toby and some may be able to use it and some may not. So good luck.