To avoid breaking the speed blocks, align Samus on the first plant, just to the left of the door.

Entrance condition:

{
  "comeInShinecharging": {
    "length": 4,
    "steepDownTiles": 1,
    "openEnd": 1
  }
}

Requires:

"Gravity"
{
  "or": [
    {
      "shinespark": {
        "frames": 76,
        "excessFrames": 3
      }
    },
    {
      "and": [
        "canMidairShinespark",
        {
          "shinespark": {
            "frames": 71,
            "excessFrames": 3
          }
        }
      ]
    }
  ]
}