This video shows a rough speedrun of the Jabul Ruins dungeon in the Legend of Zelda: Echoes of Wisdom.

In the first room of the dungeon, we use a Flying Tile to skip the scripted sequence where Zelda falls through the broken floor. You can copy a Flying Tile from the Gerudo Sanctum. There might be other ways too, but you need to avoid touching the floor (or near it).

Next, we use the ever-useful Crawltula to climb up the dungeon, avoiding the need to press the 5 buttons scattered around the dungeon to fully activate the water jet. It's hard to miss the Crawltula--there's a bunch on the pillars at Suthorn Prairie just after the first dungeon.

Since there's no need to seek out the buttons, we head straight for the area with the boss key, which is the room to the east on the higher level. The next echo you should use is the Bombfish, which you should've copied while at Stilled Zora River, during your trek to this dungeon.

After acquiring the boss key, you can warp back to the entrance (assuming you activated the waypoint; alternatively, you can activate the waypoint in the second room instead, so you don't need to Flying Tile twice), then summon the Crawltula again to climb all the way to the top.