A good way to do that would have been to not order Patton and others to halt their advance lest they take too much of Europe from the Soviets.
The thing is that we had already made a deal with the Soviets involving demarcation lines and we wanted them to honor their deal to attack Japan after Germany was defeated.
We bombed Dresden so that advancing Soviet forces would see the destruction we could inflict on Soviet cities if they got any ideas. The atomic bombings of course added to that effect. The "Cold War" in reality had been going on since WWII.