The amount of nether that Blake sent through the rune formation was certainly a lot.
But it didn't take too much time for him to squeeze out the nether as the rune formation just swallowed up every ounce of nether that he sent towards it as if it was a bottomless ravine.
The rune formation instantly ate up all the nether that Blake sent it, and in just a few seconds, Blake had already started to feel his body going sluggish.
2 more seconds went on, and Blake started to feel his feet losing their strength as Blake now needed to consciously hold up his feet lest they suddenly give up and his face would kiss the ground on the rune formation.
Fortunately, right after those 2 additional seconds had ended, Blake finally felt the rune formation stop receiving any of his nether anymore.