Thats not how it works normally. The train doesn't get in till around 7-8am. Often sleeper trains will park of a few hours overnight. So you'll be able to sleep

Thats not how it works normally. The train doesn't get in till around 7-8am. Often sleeper trains will park of a few hours overnight. So you'll be able to sleep for around 8 hours. The idea is you get in around 8am (hopefully in station near the middle of the city) and then you can get on with you days activities immediately.