For those of you who don't quite get it yet, this is my theoretical "Skip half the forest" route
We do the normal Any% Seg route through from BiT up until just after the Sword and Shield skip. From there we do EMS normally, but without collecting bugs. We shouldn't need to collect them because we should be able to do BiT Equipped from Mayor Bo's house to jump straight into to Kakariko Twilight. From EMS we go over to the Forest Temple to collect the Gale Boomerang, then head to Bo's house, save, and BiTE.
Here is where we run into the big issue. We cannot warp from the map screen with Z warp without destroying the messengers on the other side of Kakariko Gorge, and without this we cannot warp the cannon for Early CitS. However, if we clear Kakariko Twilight, we lose the ability to learn the Z warp. So we have to figure out somehow to get to the other side of the bridge, or else Skipping half of the forest will be useless in a speedrun.
Despite that, the skip should still be possible. After we clear Kakariko Twilight, we should be able to activate the Map Glitch without the Z Map button in Hyrule Field and fly Epona around past the boulders blocking the path to Laranyu Twilight. However, I still haven't been able to manage to activate the map glitch unless Midna is on my back. Hopefully we'll also still be able to warp the Goron Rock as it doesn't require the Z Map button to warp, but I have a funny feeling that someone already tried this and failed with cheats. From there it should be relatively smooth sailing until the CitS subquest,where I've forgotten everything about that crap.