Sorry if its a repost, but didnt see it anywhere, currently you can skip adds before going up the stairs, so propably killing a couple adds.
Clear the place in front of the waterfall, then click towards the waterfall (you need click to move) while having the menu open.
As you fall in the waterfall press logout, you should be midair now, and then press cancel and up you go
If you dont time it , you will get back again next to stairs and try again.
Usually takes like twice to get it.
If its been posted before, please forgive me and delete.