What did Moses' mother Yocheved call him?

Pharo's daughter lets Moses stay with his mother until "he grew up" (Exodus 2:10) (or until he stopped nursing by a Shabat table survey I conducted). It's interesting that the Torah doesn't tell us the name his mother would use to speak to him. The torah only records a name later in the same chapter, given to him by Pharo's daughter. What are we to learn from this.