I'm currently kinda stuck at kaguyas home (dungeon itself is easy but the dragon ark keeps making me run out of revives at around 1 / 3 hp left). Wanna know if the grind to get my bows to +100 will be worth it if there's not that many dungeons left. And if there is, are they harder than kaguyas home or easier? I mean for bosses of course.

Lacus Mortis (has a weird boss)
Clear Palace of Rain (Kaguya isnt fun)

Last quest before Misty Moon is you have to make a magatama which needs a stardust thingy from dew creek

So only 2 more after kaguyas home? That is pretty sweet, also apparently new story content is coming today....that means my hope for finally reaching endgame soon will never happen ;-;

5 dungeons in total on moon and yes the jump from +90 to +100 makes a difference. and as for hard boss only one i can think of is lactus mortis since i still dont know wtf to do besides dmg the vines (odd colour) and survive. boss aoe whip ( the giant vine ) is one hit and fast.

Well u only need to SURVIVE in Lacus Mortis boss u don't need to kill those plants.
But bare in mind that the last batch of plants is the real problem.