@TiddyTidTwo if it's any consolation, in my experience the ICU doctors wait far longer than they need to before they suggest ceasing treatment. Decisions are made very, very carefully and any and all options are considered before withdrawal of care.
Sadly, medicine can't fix all and if organs are failing then it is just a matter how and when a person will die, not if.
Adults in intensive care lose around 2% muscle mass every day that they are ventilated. They generally say that a day of ventilation requires a month of recovery. Many, many patients needed extensive rehabilitation following ICU care. I looked after a patient who had been ventilated for 10 days. When they gained consciousness, they were so weak that they could only lift a finger from their covers. They couldn't even raise their hand.
It's not at all like Holby City or Grey's Anatomy 😑