Practicing saying dadda!

At about 6.5 months Sophia started to say "mumma" and right before 7 months she started saying "Dadda!" She still seems a little vague on the meaning of the words, but we've noticed that she tends to say mumma when she's hungry or frustrated and says dadda when she's excited and playful. We're working with her a lot on these words, and I'm looking forward to a time (soon!) when she will use her first two words consistently.