I am caring for my uncle who is on hospice now. He stops breathing for a few seconds and then starts breathing again. What's going on?

Is he speaking at all? Changing the focus of where he looks? Not moving much at all and generally remaining perfectly still? Is he eating or drinking anything?

Is he at home, or in a nh? What does the hospice nurse say? You can reach hospice by phone any time of the day or night with questions like this.