Accessed this without any shardbearers beaten, beat Astel before any shardbearers. Can't go beyond Astel, can't access Ranni's quest stuff down there but you can do the fight early and get whatever else from the caves / lake / city etc. Just an interesting sequence break.

The tree jump did take me an hour initially. It seems just mashing isn't really enough as it makes Torrent sometimes drop a jump input. What you want for the second tree landing is to prepare to jump and wait a frame or so perhaps. It feels kinda random when it eats your input since the collision atop the tree is so small. Honestly mashing can work but the most important part is to be ready to pull back on your double jump and then twirl around to try to avoid the gutter and clip ontop of the shingles.