As soon as my aunt was transitioned to "comfort measures only", Sylvester seamlessly transitioned to completely caring for her, and us (her family). Despite her unchanging condition, he checked on and cared for her diligently, as if she was his only patient, though I know for certain she wasn't.
But most impressive to me was how he went out of his way to make sure we were fed and were as comfortable as possible as well. He found me a personal escort to the cafeteria and made a conscious effort to connect with me on a personal level. In these final moments, that human touch and level of compassion mean everything.