Hi Ash and welcome to the forum. You have a real dilemma there, it's a fact MB prefer their customers not to tinker with their own cars! I have a 2016 220d Sport and like to swop tyres front to rear periodically so they all wear our at the same time. The only elegant way I could achieve this was with 2 jacking point inserts and 2 high-lift bottle jacks. Each jack will support the entire side of the car on its own. As you have only got until tomorrow morning you are going to have to McGuyver it. Jack up car at the rear passenger jacking point. With enough lift, the front tyre will come off the ground allowing you to create a support at the front passenger jacking point with your axle stand (you will probably have to lay a small spacer into the axle stand cradle to prevent the ends fouling the sill area around the jacking point. Lower the car onto the axle stand then lower the jack completely and the damaged wheel will be in the air for you to remove for repair. Don' forget to loosen the wheel nuts BEFORE you jack the car up 
Jacking point inserts look like this in case you need to fudge them:
GLC Jacking Point Insert
Jacking point inserts look like this in case you need to fudge them:
GLC Jacking Point Insert
