Morph and unmorph before reaching the transition, and then drift to the ledge. Enter the room as far right as possible.

Entrance condition:

"comeInNormally": {},
"comesThroughToilet": "no"

Requires:

{"notable": "Room Entry Reset Fall Speed"},
"canSuitlessMaridia",
"canResetFallSpeed",
"canPrepareForNextRoom"

Dev note: FIXME: An enemy can hit Samus where she would unmorph as a way to perform this strat without Morph.