Can I use breathe

Yes I have copd with emphazima and have been told by doctors I am at stage 4 and I have been going for test for a lung Transplant I have not been yet told I could get lung Transplant that is why I have been going through test . My question is can I use breathe I take breztri inhaler twice a day, I take ohtuvayre twice a day, albuterol as needed, I take gabapentin twice a day.