Watch the Classi-Cool online guitar lesson by Brad Carlton from Chord Studies: Evolving Progressions Vol. 2
This ii - V progression is going to have you utilizing a classical technique because you'll be maintaining a 2/3 barre, which is barring four of the six strings. The first Dm9 chord is a beautiful voicing that you'll notice has the 9 and the ♭3 side by side. All you're going to do is move up one fret then switch your third finger and second finger and you'll have a nice G7 chord.