The days move on like this: Sirius wakes, is fed hospital food, then sent to speak with Healer Jones or set some cognitive task like a puzzle, or wizards chess, then sent back to have lunch. After lunch, a walk around the ward and a series of tests, from physical ones like seeing if he can lift a book without shaking to magical ones like checking to see how volatile his magic is. Then dinner, then time to do his homework for the day, which is usually journalling or reminiscing or generally trying to keep the dementors at bay. Sometimes, if he has the parchment and the bravery to, he writes to Remus, asking him to visit. He sends none of them; he’s too afraid, that they’ll tell him Remus is gone, or that he isn’t but doesn’t want to see him, or that he’s alive but  unable  to see him, like the Longbottoms—in St. Mungo’s—or Mary—obliviated by her own hand, according to McGonagall.