Its tricky to pull of the days 5, 6, and 7... its the same as you would do to get 4th day... you have to bottle adventure the gibdo mask and fill the duplicated bottle with hot spring... after you do that, you have to immediately pull out your ocarina (You got to be lightning fast) and play the reversed song of time... after you do that, get out of the hot spring source (via exit)(Next)