Do NOT be afraid to ask professors for help. They have office hours for a reason, and most professors wish more students would come to them. As long as you're not grade-grubbing every assignment, they are eager to help. Also they can clarify any rules stated in class or on the syllabus that are ambiguous.
Figure or approximate, depending on how the grading is set up, what percent of your grade each assignment is if you're having problems being motivated to do the work. Also figure how much getting "in the habit" of not doing a particular kind of assignment which is individually very little of your grade, but could add up, will cost you. Like, say, not doing any of the 20 reading responses that are 1% of your grade each.
Save the grade-grubbing for when you have a GOOD argument as to why a grade should be higher. If you're complaining about everything, professors will tire of dealing with you, "decide" that they don't round up, and probably do a worse job at clarifying things for you.
If you are diagnosed, disability accomodations are possible. They can allow you more test time, a note taker (which I had in one class one semester), the right to do normally-group work alone, etc. Many professors will direct you to where you need to go to get the accomodations if you tell them of your diagnosis.
Don't agonize over a few points in one class to the point that you're losing that much or more in all your other classes. Be careful your efforts to get a better grade in a tough class don't give you worse grades in all your other classes, lowering your GPA.
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Your Aspie score: 98 of 200
Your neurotypical (non-autistic) score: 103 of 200
You seem to have both Aspie and neurotypical traits
AQ: 33