my mother is suffering from pulmonary fibrosis since two years, every time she is given gupison and tapered gradually, after a period of time from stopping gupison she gets the symptoms again , (SOB, wheezes, and hypoxia) she is on lasix continuously . This time she has been doing great on gupison 20 mg since 3 months. I am thinking to keep her on the same dose to avoid her suffering again, she is already on wheelchair and taking calcium and vitamin D tablets , she is 73 years old . Am I making a mistake?