Hi Vinod Ji,
Go and see your doctor soon as possible,you might need some nasal oxygen because your copd is maybe getting worse.
No other magic cure am afraid,rest as much as possible and relax.Take all your tension out of every part of your body.
Sit up straight and slowly nose breathe.Take your focus from the mind and focus on relaxing and slowly your breathing down.
Through the nose and out through your nose,no purse lip breathing.Its uses the wrong muscles.Tummy breathing,no upper chest breathing.
I know it’s too much to ask but it will help.Take sips of water if your mouth is dry.
Hare om,hare Krishna and repeat millions times if you have to.
I wish you speedy recovery my friend.
Keep in touch my friend.
Kish Tura