Get the hard feeling from dried milk out of a bashe couch?

Question:please help or i'm dead

Answers:
Pour equal parts of warm water and mild detergent (like hand soap) in a spray pump. Spray onto the dried milk, and rub an old toothbrush on it. Get paper towels or an old white tshirt to get the water out of the sofa by laying the fabric on the stain and sitting on it or putting weight on it. Repeat the process several times. If after 2nd time the surface gets soapy or bubbly make sure to have another spray bottle of warm water to get the excess soap out; by spraying it onto the soapy surface and placing several pieces of folded paper towels or a white tshirt on it and sitting on it or placing weights on it.