Looks very cute! I also do not fertilize my epis yet, seems so carefree and really took off when I brought it outside.
It does need good bright light to encourage those blooms. And I guess the bloom time depends on what cultivar it is. My epis usually blooms during Spring, oftentimes gets blasted, as temps are still trying to stabilize from winter to spring. I am treating it like my outdoor orchids, planted in orchid media, though it gets a bit more water than the orchids.