For the last 3 days I have been booting up Pokemon SV, playing for a little while, then moving on. My switch remains on, just sleeping, until the next morning. In the morning I save, close the game, and reopen it to avoid crashes from the memory leak or whatever. After a few minutes of reopening the game I run into a shiny wild Pokemon. This has happened to me for 3 days in a row since I have started doing it. It could just be coincidence, but it has always been within minutes of restarting the game, I move around a little and I see a shiny.