Begin on top of the lower left Namihe Jump into a double IBJ with such timing that Samus passes above the fired flame and such a way that there is no horizontal speed. A forward jump with run not held will work. Begin diagonal bomb jumping once past the start of the 2nd spike group from the top.

Requires:

{
  "notable": "Diagonal Bomb Jump"
}
"h_heatProof"
"Gravity"
{
  "or": [
    "h_lavaProof",
    "canSuitlessLavaDive"
  ]
}
"canJumpIntoIBJ"
"canLongIBJ"
"canDoubleBombJump"
"canDiagonalBombJump"
"canStaggeredIBJ"
"canInsaneJump"
{
  "heatFrames": 1560
}
{
  "lavaFrames": 1520
}

Dev note: heatProof because each attempt at this strat costs so many heat frames and its hard enough already.