Phalaenopsis won't flower anymore

[Rhodic]

Hello. I have a Phal and it was given to me by my son for Mother's Day last year. It bloomed and bloomed and I was thrilled until.......I pruned it! I cut back the stems to the last but one node after flowering and nothing has happened since. The leaves are lovely and green and the roots look healthy but it just won't flower. I have not watered it so much over the winter. I know someone who doesn't cut hers back until new flowers appear and then she cuts it back to them and it thrives. Please can you help me? This is my 2nd Orchid...I drowned the last one! I look forward to reading any replies that come my way. Many thanks.