Get I140 approved during removal proceedings. Does it help?

Depends won which category is if eb-1or 2 then visa is current and your counsel can ask for termination to go adjustment. If it is eb-3 then depends when your priority date is and if not current counsel can ask for a continuance if soon enough it becomes current other wise the judges will not grant such continuances. Talk to your counsel but don't second guess him by asking question on line.