How long does it take for Feng Shui changes to take effect?

How long does it take for Feng Shui changes to take effect?
William

The initial effect may be sensed during the first lunar month after the first new moon. My experience is that it usually takes 3-9 months for the Feng Shui effect to become clear. However, there are happy instances when things have changed dramatically, miraculously within 48 hours too.