Arikayce Clinical Trial

Hi -- I am in one of the ongoing Arikayce clinical trials (one year of Azithro, Ethambutol and inhaling either Arikayce or a placebo solution). Before I started the trial, I never coughed and since starting, I cough all the time. Can people who have used Arikayce before let me know any strategies they used to help with the coughing? Thanks! (And apologies to people who are also on the NTM forum -- I follow both so I will be posting this same question there)