New Note
For Db2 (C#2), your left thumb will press the whisper key, the C# key, and the low D key all at once. In order to minimize the amount of movement for your thumb, touch the C# key only with the top edge of your thumb. Press the low D key by slightly collapsing your thumb. As you change from Db to another note that requires only the whisper key with the left thumb, slide the thumb back down, never leaving the whisper key, while arching your thumb back up over the D key.
