finicky

adjective2

1. •
   (informal) Fastidious and fussy; difficult to please; exacting, especially about details.

   • My editor is very finicky about punctuation. Every dot and comma has to be just right.
   • She has a finicky baby that's hard to feed.
2. •
   (informal) Demanding; requiring above-normal care.

   • The lawnmower is a bit finicky in cold weather.