In the current any% route, there are two times where you enter Dawnvessel from the main menu: once after skipping the Sunfish cutscene, and once after skipping the Wind cutscene. When entering the stage, you sometimes fly into the perch, which pulls you out of the cutscene early and saves 7 seconds on the spot. However, it doesn't seem like you can control whether you fly into the perch or not. After almost an hour of testing, it seems completely random, with about a 1/3 chance that you'll get in the perch.

HOWEVER, on PC, if you click off the game, the game freezes until you refocus on the window. This is usually a useless and annoying mechanic, but while experimenting with the perch, I discovered that if you click off the screen for about half a second at the very end of the loading phase (when the screen is solid blue and you are about to enter the stage), then for some reason you fly in a completely different direction than usual, DIRECTLY TOWARD THE CENTER OF DAWNVESSEL, which is where the Wind is located.

TLDR: The optimal strategy is to use the click-off technique the first time you reenter Dawnvessel, since you will fly straight to the Wind. The second time you reenter Dawnvessel, you can choose to either click off for a safe strategy that loses approximately 3 seconds, or you can gamble on the 1/3 chance that you'll fly into the perch for no time loss. If you miss the perch, it's a 7 second time loss and it's best to reset.