Um... yeah for this one I just did a lot of running. The other silent realms were more doable for me because you could take your time and stealthily avoid the watchers, but for this one I just couldn't avoid them. Fortunately there's a lot of ways to get away from the guardians here. If you're near lava and a guardian's about to catch you, just jump into the lava, it'll give you a few precious seconds to run away. Also I went up to the slide a LOT, because you could lure the floating guardians up there, then slide down far away from them.
To start with, though, get the two on the slope to the left when you first enter(this can be particularly tricky, as the watchers are really cramped here). Make your way to that one tear on the swing on the other side of the map after that; that's the hardest one to catch, and you do NOT want to be caught trying to catch that one when guardians are after you, as there's nowhere to run in that particular area and you will most likely die. But yeah, once you get the one on the swing and the ones on the slide, it should be smooth sailing.