My phal has been blooming over and over for several months. I was away for a few days, coming home to find that all the blooms on the floor. The very tip of the stem is a brown color, looking dry. I watered before leaving and it is my regular routine. I also have many air roots that I was planning to repot after flowering stopped. As per instructions, soaking roots in water to soften then ushering an orchid mix. Is my phal dying?