Hi! I am a newbie and I just repotted my phal for the first time. I bought it in like April and the flowers have been falling off for a week so I cut the flower spikes then repotted my plant. The roots were in bad shape & my phal has like 4 good roots left after I repotted it. Should I cut the entire stem so my plant will just focus all it's energy on the mother part? Or will it be ok as is with the stem? The stem is still green.