I'm a bit worried about my breathing issues. The doctor prescribed me Predmet 4mg tablets for 15 days, and it really helped control it. But now that I've finished the course, the breathing problem has come back. How long can I safely continue taking this medicine if it helps with my breathing? Could you please advise?

Patient is advised predmet 4 mg for 14 days, then predmet 2 mg for 14 days, and lastly tab predmet 1mg for 14 days and then stoped.