So over DD's (2 1/2) current phase, whenever she wants something or I ask her to do something it's "I get it" or "I do it!"

Which would be fine, if only the 'I' didn't mean 'me', as in, mummy!
Even something as simple as picking a ball up which she wants to play with! Gahh!! You were happily independent before, I know you can do these things all by yourself!