Here's a text file that I was looking for and found - it should turn off the screen while in tty3:
https://ipfs.desmos.network/ipfs/bafybeicyzthe6p7j3ymo4qfirdmh6akanvahmfzilqvipdr3q5skboc76a/ttyscreen.txt

>>10877
>Install Gentoo
Do you use Gentoo? It sounds like more work than Arch Linux.