You have a few options...
1) Get it lowered on STAR (this may be limited to a certain drop) Around 1hrs labour from an indy. No parts to fit all done via star.
2) Use lowering links (these can be a royal PITA to get set up correctly) inexpensive and lots of sources to purchase from:
Airmatic Lowering Links | Vehicle Lowering Kits
3) A lowering module with remote (allows a max drop of 2" and can be controlled via a small hardwired remote within the vehicle to achieve your desired height or switch it off and car returns to factory settings)
The most flexible but the most expensive option.
https://www.programainc.com/mercedes/suspension-control-module-lcmdcv4.html