Lay a Power Bomb immediately after killing the Viola, in order to get a Power Bomb drop even if full on Power Bombs. Jump straight up to collect the drop, then remorph and hold the Crystal Flash inputs.

Requires:

{
  "obstaclesNotCleared": [
    "R-Mode"
  ]
}
{
  "heatFrames": 270
}
"h_heated10PowerBombCrystalFlash"
{
  "heatFrames": 90
}

Dev note: The heat frames here could be tightened by adding another node.