My two old girls are about 9 years old. All spring they have been slowing down, having difficulty walking much, not interested any longer in swimming. I believe they are winding down. Is there anything I can do to support them? This feels like palliative care, not quite hospice yet. They are still drinking but not eating very much. They just appear to be resting most of the time. I haven't had the opportunity to be there for ducks just passing away of old age so I don't know what to expect.