Dudette the biggest thing you can do is figure out an organization system to track your commitments and things need to do.
This was the one thing that turned me from someone who would regularly forget things and commitments to being able to take on and follow through with a LOT without needing to remember very much.
The system I use is Getting Things Done and I implemented it in Todoist, they have a guide: https://todoist.com/productivity-methods/getting-things-done
The other thing is learn to do all your readings BEFORE class so that the lecture is an opportunity for you to fill in any gaps in your understanding and ask questions. If you do this consistently, you will never need to cram for exams.
I don't have the book on hand right now, but there is a proof of the immateriality of the intellect in The Science before Science by the physicist Dr. Anthony Rizzi.
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I edited my comment btw.
Nah you're not crazy, your human. We aren't machines. Thank God for that.
"It's muscle memory" doesn't account for the times your mind is focused on something else. Next time that happens, check the shutdown logs on your computer.
If you're truly convinced, get a body cam, start a youtube channel and live-stream your daily life with edited videos for the times that it happens. At the very least you'll already be making money from it, and if it happens at a rate that's better than pattern-bias/randomness, write a book and advertise yourself. Tons of people have gotten rich for much less (UFO encounters, haunted properties)