Hello. I recently moved my 78 yr old mother in with me. She has COPD and was in the hospital with her first exacerbation end of Jan. She had gotten down to 78lbs and she is 5'1". After living with me and having a PT come 3x/wk, and me cooking three meals a day, she was eating well and gained 10 lbs. Now I am worried because all of a sudden 3 days ago she stopped eating, barely moves around and coughs more. Is this normal to have these bad days or should I call the doctor? How long should I let her go without eating and only drinking fluid? Is this the beginning of another exacerbation?