Multiple readings of ur notes helps a lot, revise the notes , if not possible daily, then on alternate days. And try to recall similar reactions when u go through the mechanisms of any reaction. Then try to solve the questions of any practice book like arihant. It'll help u a lot in fixing up the rxns in ur mind.
Give more importance to mechnisms and try to revise them frquesntly, and also their intermediates. Sometimes, they can take the hell out of u.
And plz dont create a phobia for the topic. that'll stop u from working on it. If u cant understand it once, read it again and again, clarify ur doubts then and there, no matter how stupid or rubbish they r.
The subject is with u in the exam if u r with it for two whole years. so, try working on it.
Cheers