My mom has COPD and here is what has been recommended to her:

1. Get plenty of exercise to keep the remaining lung tissue as healthy as possible.

2. Drink plenty of water.

3. Eat a healthy diet with lots of good protein.

4. Watch your weight

5. Use your medications/inhalers as directed

Make sure you find yourself a good pulmonologist and work closely with them to manage this disease.

Keep us posted.