請教皮老師和8老師

請教皮老師和8老師:

 

Situation: my H1B will be 6 years soon; 485 (EB3) was submitted years ago, I am a dependent; I will apply EAD soon.

Question: Do I also need transfer my status from H1b to H4 before H1b expires? Is that OK if I only have EAD after my H1b expires?

 

Thank you very much!