put everything and i mean abso-fucking-lutely everything all your due dates paper timelines tests quizzes estimated chapter completion dates other priorities fun times workouts etc nothing is too much or too small on a calendar i use excel and look at it at least 5 times a day  go through those syllabuses with a fine tooth comb then do it 3 more times  then take all that info and input it into your phone calendar and make alarms with multiple alerts for each event with reasonable reminders  it’ll suck it’ll take a good 34 hours but it’ll do wonders  i haven’t missed a damn thing yet since doing this only took me 5 years of struggle-busing to figure it out  there’s a reason so many adhd people don’t graduate from college it’s literally rigged against us  balance the scales back in your favor my friend