As rene says but, when you get your first car(or extend your lease) your not bound by having to wait for 3 months from when you can order to when you can exchange the car.
So if you could find a car that’s already built, you could be in it from 7 day to 2 weeks. It might not be easy to find one in the current market, but if you not too fussy on a colour or trims, certain options or even makers then that is an option to look at.
As who knows how long you’ll have to wait for a car to be built and if you really need a car asap that might be a good option to look at. If your flexable that is? Make sure that it is suitable for your needs though.