How do I get to the sacred forest meadow as grown up Link?

You follow the same path as young link. a easy way to do it is to look in the log before you go though. logs that lead you back to the kokiri forest will have a white fade out look to them. and the ones that keep going are just black

Also, the directions are:

East (right), North (left), East (right), North (left) (You may have to play sara's song to get past milo), North again (straight), West (left), then North (right) (that one will have the faded look to, but it leads to the forest medow)

Then from the forest meadow, if you have already set up your scarecrow song you can get on to of the maze and bypass all the dog like monsters