If your timeline is already set by something other than price, such as downsizing after retirement or a move that is already committed, waiting for a marginally better month of supply rarely outweighs the cost of carrying two homes or missing your own deadline.
If your timeline genuinely has flexibility, it is worth watching whether new listings are rising or falling, since more new listings competing for the same buyers generally means more pressure on price, while fewer new listings tends to support it.
Most sellers who ask this question already know the answer, they just want the number that confirms it. Get your hand-reviewed valuation from Joel Dyck.