I started running a 5E D&D campaign a while back and as it was one to one (1 DM, 1 player) I felt that the recovery / healing rules in 5E were a bit too generous. I totally accept that in party play, the 5E rules allow players to feel heroic and bounce back into the adventure as quickly as possible, but for a more story rich, role-playing oriented game, these are the rules I came up with and they have worked out just fine.