Wait for the global Sova to begin climbing the wall below the door. Time a walljump into instant morph where Samus boosts off of the Sova with the right timing to bounce up to the door's ledge. The jump must be a fully delayed walljump. Normalizing the camera can help with timing the walljump. The damage boost can be attempted again when the Sova climbs down the left wall, or by knocking it off the wall with a Super Missile.