The meaning of sieve, sifting in dream | Dream Interpretation
Vision: Looking at a sieve: you have actcd foolishly and the result will be very unpleasant. Make sure that you keep an eye on things.
If you are putting something through a sieve: something you want to do is turning out to be hopeless, and if you proceed you will only be wasting your energy. Using a sieve: somebody is asking you to account for your actions.
Depth Psychology: This is the time to “sift” through things and discard what is useless.
The dream is an admonition to be more critical, especially about what you do, and change your materialistic view of the world.