lol are you kidding
all you need to do is be nimble and get a bunch of shurikens
having a skybridge made of wood platforms helps too, as you can attack him while he's below you
pretty sure my blow tube thing that shoots seeds does just as much damage as a shuriken per shot
and I have over a thousand seeds so ammo isn't a problem
and the sky cloud bottle whatever prolly takes care of getting out of his way
he just has way too much health