Does anyone have any information on what to expect of a 92 year old man with end stage CLL who opted out of treatment?

He is at home under Hospice Care. Just don't know what to expect. I have asked Hospice and they just say one day at a time. He has no appetite, loss of weight, sleeps 12 hours each night and on and off during the day. Excessive sweating, sometimes short of breath but is in very little pain. I am trying my best to keep him at home and comfortable but am worried as to what is going to happen as it progresses. Any input is appreciated. Thank you