How to speedn up EAD process, any suggestion? THX!

My EAD application was recieved at NSC on May 4th. So far there is no update on my case. It\'s been over 80 days now.

Anybody had experience of sending an expedite request to NSC? any negative impact?

I\'m in a rush to get the EAD as a pending offer is waiting.

Any suggestions? Thanks a lot!