There are two kinds of slips: a side slip and a forward slip. Drop one wing and apply opposite rudder to induce a forward slip and lose altitude quickly.
The Difference Between a Forward Slip and a Sideslip - Pilot Institute
Aircraft Slip To Lose Altitude: Technique
Forward Slip to Landing - MzeroA Flight Training
Slip Left or Right? - PilotWorkshops
Risk - The Top Rudder Remedy - Plane & Pilot Magazine
Crabbing Slip / Sideslip
Faulty pitot system likely cause of Malaysia Airlines 737 altitude loss, News
approach - Mushing glide vs forward slip sink rate - Aviation Stack Exchange
i.ytimg.com/vi/XHd4RbgU5gI/mqdefault.jpg
Slips: Forward Or Side, What's The Difference And Why Care? - AVweb
No stall, no spin: why angle of attack is essential : Air Facts Journal
Side slip preflight lesson - studyflight
Technique: The new slow flight - AOPA