IAmNeil

Derivatives’ valuation is based purely on logic. If you understand the material you do not have to remember much! I found that one of the most straight-forward sections. (much unlike FRA and Eco). For example, in the forwards/ futures section the treatment for benefits, storage costs, coupons, dividends etc is the same!
I would suggest a slow reading over the material until you are sure that you understand everything clearly, combined with EOC. Be sure that you try to replicate all formulas and not just recall them from memory. Then you won’t have a problem!! (plus schweser’s done indeed  a good job on the subject.)
Best of luck!