My 62 mother was put into ICU 4 day ago because her CO2 levels was way to high. She has stage 4 COPD and was diagnosis with pneumonia in her right lung. She has made improvements in the last 4 days and they have tried to take her off life support but her co2 level still going up. I super worried she may never come off life support. So how much longer is she going be on the Ventilator are is her chances are low ever coming off?