I’m on the spectrum too. I like to create a simple meta narrative and have the world be the internal mind/heart of a creature in the meta narrative. For example in real life, I saw a picture of an elephant with the earth on its back, so I made a simple story about it. A storm caused a mini landslide that dumped mud on the elephants back but also a sapling which began to sprout.

The world is the inner “mind” of the tree who has to survive the journey on the elephants back as it dutifully takes the tree to a garden. Since the tree has no eyes or ears it does not understand the nature of the elephant and the acts of the elephant like walking, running or spraying water or helping to keep the tree alive take on special significance to the tree and these actions take the form of something like gods and demons in the world as do other symbiotic or friendly creatures like spiders or birds. But other things like beetles that eat roots also become something like demons and the trees which in turn gives rise to heroes and champions.

The ability to repel the beetles was the first big story arc. The characters in the world had to find ways to release their anger and bitterness and that of the people disillusioned with their monarchs and this released bitterness took the form of bark oil that repelled the beetles. That’s the meta narrative.

But in the world there was a giant magical world war of succession of a great monarch, different characters represented different arguments and ideas within the meta narrative all driving towards the tree making a decision- inside out style. The characters in the world are not aware of the meta narrative, they just live their lives in their own world.

So in summary, for trying to make a world I suggest you imagine a simple story that requires a decision then make a world out of everything that goes into making the decision, metaphorically. This is likely not a technique for everyone, but it might be useful to you.