From Longman Dictionary of Contemporary Englishbe falling to pieces/bitsbe falling to pieces/bitsBREAKif something is falling to pieces, it is in very bad condition, especially because it is very old SYN be falling apart The house is falling to pieces. → fall
Examples from the Corpus
be falling to pieces/bits• The walls were all dirty and the furniture was falling to pieces.• But most of the material was falling to pieces.• There's a difference between consciously colouring a passage and not being able to control a voice that is falling to bits.• They would blaze into prominence just as the foreground planting was falling to pieces.• The Soviet Union is falling to pieces; a bloody struggle for those pieces can not be ruled out. 