Move it to a spot with a bit more morning light. I mean, I had to start using a weak liquid feed every few weeks in the warm months. The leaves got super dark green first, then it finally pushed out a flower. Took patience, but it felt so good when it worked.
Seriously? All that work just for one flower. I tossed a geranium in a cracked pot last year and it went nuts with blooms. Sometimes these fussy plants aren't worth the babying. Feels like they're holding the flowers hostage until you jump through a million hoops.