Not receiving proposals

From the download Tried & tested methods of getting pious matches, one of the things to read is “If a girl is not receiving any proposals, she should strike her right
hand hard on her left hand after the Fajr salaah and then recite Ya fattah forty times. Her hopes will Inshaa Allaah be fulfilled within forty
days.” Does this mean that a girl must only do this for one day or for a specific number of days?