OP, I've been in similar situations to yours countless times. It's part of the way we process things, which is what author Donna Williams referred to as "monotrack" or one thing at a time. It is hard to keep track of multiple things at once, not to mention frustrating!
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I am an anomaly. Diagnosed with borderline,"tentative" Aspergers at 7 as the school board required me to have a label in order to receive special education services. I did not fit criteria for ASD but that was the closest label that fit my behaviour at the time.
My longtime psychiatrist has confirmed that I do not qualify for an ASD diagnosis (but have traits & OCD-like traits).
Mostly keeping a distance from ASD-related things (including WP).