Help severe nutrient burn accidentaly fed twice in a row

Need help have a 5 week old plant with sever nute burn & don't know what to do somebody help !

Set her in the bath tub and run about 3 gallons of water through her. after her soil dries out restart her nutes at half strength, and from then on, follow the directions on the nutrient bottle.

Thanks rusty will do . will post results.