First of all, if you really want to downgrade the Abyss to Low 1-A, you would need use enough scans and to start from the dreamlands to see how powerful it is, cause it is actually near
Low 1-A
Here, it says that Hypnos went to a place where consciousness transcends time, space, and where only the concept of pure dreams exists. Dreams are beyond dreams, the language is beyond human thought, and it posses district and deffine. The Dreamlands also contain an infinite hierarchy of infinities and vacua (Which means void, matter, space, nothingness and emptiness) . At the end of this, the narrator and Hypnos went to a barrier.
Beyond the Infinite hierarchy of abysses, lies even more greater infinities
Credit to Okstrike:
https://vsbattles.fandom.com/wiki/User_blog:Okstrike/Cthulhu_Mythos_revision