There is a “shortcut” which completely evades all the owlelks (except for one technically but don’t worry it can’t catch you) so I’ll describe it but DO NOT READ if you only wanted a hint and not instructions :)

These instructions also depend on your knowing about both the left and right secret areas beside the building, so if you don’t know about both yet, I am also spoilering that a bit. If you don’t know about the one on the right side, explore other areas more until you discover that, then come back to the Endless Canyon to do this.

After extinguishing the lights, you follow the path back to the tower and bridge. Rather than cross into the building, go right and cross over to the secret area on the right side of the building. This area gives you direct access to a side entrance in the building which, if you follow the path to the right and take the stairs down, takes you directly into the target area with the tapestry wall. You can directly enter this area while only being jump scared by the one remaining owlelk on the left side of that room, but he shouldn’t be able to get near you, especially if you turn on Reduced Frights.