https://pilotworkshop.com/tips/slipping/?

… To lose altitude quickly you need a forward slip. To induce an effective forward slip, the pilot needs to drop one wing and apply a large amount of opposite rudder. Remember to keep the nose well below the horizon during the slip.

…  Typically if there is a crosswind, you would put the low wing into the wind as that has you positioned nicely to go into the sideslip for the crosswind landing.