To get one's teeth into something means to start doing or become involved in something with a lot of energy and enthusiasm, but in this sentence the speaker wants the person to stop
Context: Immediately dismissing my wishes he sternly exclaimed I'd like you to stop engaging in this new project I'm developing.
Hypothesis: Immediately dismissing my wishes he sternly exclaimed I'd like you to get your teeth into this new project I'm developing.

Given this context, is the hypothesis true (Yes/No/I don't know)?