Ok, here's a start - a culture sheet from AOS to care for your phal. You can also find other sheets on AOS and here on the forum. I still believe that your North light will not be enough for the phal to rebloom. I have quite a few phals. Some are growing on my west window - no direct sun (afternoon sun is filtered by curtain), also have some growing on the dining room table & some in a south window - protected from direct sun in winter with blinds. This time of year, I have no direct sun, due to an overhang on the patio. A little early morning sun from the East is usually ok, but not too much. I'm not sure how hot your eastern sun gets in Florida.
Phals do not like to be completely dried out, nor do they like wet feet. Try the skewer method to gauge when to water.
http://www.aos.org/aos/uploadedfiles...lturephals.pdf