The Baby Class has a small aluminum boiler similar to a basic mono-block. Waiting longer or flushing the line won't do too much to help. The water is pretty much heated on demand and the "force" is in part produced by keeping the line diameter small enough to ensure adequate velocity of the steam at the outlet. That creates the problem of the line being easily blocked by scale. WLL has many descalers that will work quite well. If you are in a rush you can empty the reservoir and add about 16-20 ozs of vinegar mixed with water (around 50-50%).Flush the steam line several times until the mix is used up. This should restore the line to full usable diameter and get you back to normal operation. Sometimes you have to use the vinegar at full strength depending on the scale makeup. A water softener will not generally reduce the buildup of scale, that is a function of water quality, which is a function of water source. An Easy Water device does produce a measurable reduction in scale, but not complete reduction. The use of an Easy Water can make scale worse for a time before getting better. Water filters work too. Usually the more expensive they are the better they are.