How long can you cover the service appointment?

Hello, I have to tap your swarm knowledge again: I drive an XC60 T8, EZ was on 26.03.2021, the car ran about 17,000 km. The car is leased. A few days ago the car informed me that it would like to service it. Since I want to combine the service directly with the wheel change, I would like to do the service only at the end of March. My dealer says that this is no problem, that one can overlay the service “a few weeks”. I actually think it is unproblematic and would not even expect an overlay (EZ was only at the end of March 2021). However, I am irritated that the car pushes for maintenance so early, I didn’t know about my previous V60 I.