There is a lot you can do 1) smoking cessation ( this will slow how much lung function is lost over time.
2) inhaled medicines can help shortness of breath and decrease the risk of symptom flare ups, specifics 3) oxygen
if advanced disease 4) vaccines for flu
5) pulmonary rehab 6) in select cases "lung volume reduction surgery" . All of these merit a talk with your dr. To discuss.