Since the President can not really do anything about abortion except appoint SCOTUS judges, and given his positions and his work with Robert’s nomination, I trust he will appoint judges that share our positions.
What else do you think he can do...
In terms of legislative maneuvers, not much. He could appoint an advisory group, of mostly women, to recommend viable alternatives to abortion, e.g., adoption, and promote it from the bully pulpit and via providing incentives to both birth mothers and adopters. Might work.