Stai pianificando di visitare Berlino da Amsterdam per 5-6 ore. Cosa ne pensate di questo itinerario sulla Deutsch Bahn?

I will sleep on the train, arrive there early in the morning as I’m taking night train that arrives in Berlin HBF at 6 am ish.. I don’t want to stay in Berlin. Just want to see the Berlin wall , and walk around for a bit then head back at 2 pm as you can see.

I’m not taking any FlX trains as I heard they are reliable. I checked and the trains I’m taking are.
Question, do all of the trains at the transfer stations come every few minutes or do they just come a few times a day?

Thanks