12

It is easiest to do a diagonal shinespark up the left wall, then hold left, angle down, and spam shoot to easily grab the item.

Entrance condition:

{
  "comeInShinecharged": {}
}

Requires:

{
  "shineChargeFrames": 30
}
{
  "shinespark": {
    "frames": 59
  }
}
{
  "heatFrames": 180
}