Mission 7 - missed first rune challenge

[rampage7]

I am playing Doom 2016/Mission 7 and I accidentally skipped the first rune challenge and gone somewhat past it.  I am still in the "retrieve the yellow access key" challenge, at the tower with the purple supercharge icon at the bottom and the elite guard at the top.  Is there a way that I can now go back to do the first rune challenge in Mission 7 and continue from there without having to restart Mission 7?