I absolutely get that. I'm autistic as well (AuDHD) and I feel very uncomfortable not understanding the entirety of a setting in case I miss out on something crucial, but I get so absolutely word blind when the chapters get so incredibly descriptive and it seems like in the case of this WIP, that is unfortunately rather consistent. I understand the desire to elaborate when you've built an entire world, but you MUST consider that this is something that needs to capture your audience and keep them engaged, and when it drones on and on and on about things that have no impact or relevance to the rest of the story at all, some serious cutting needs to be done.
What really helps me with books like ASOIAF is listening to audio books instead of reading them myself, that way I can draw/play games/DIY or whatever and still manage to pay attention to the story because of the additional stimuli.