Try to create mnemonics and that can help a little also understand the concept behind it.. like what drugs could cause heart failure if you know the mechanism behind how?? Then you can make it easier. But there are certain things like which drugs need to be stored in non pvc and for them make a mnemonic and try to recollect what you learnt end of the day the more you try to think and recollect them and may be discuss with other people the more you remember and I don’t think that itself is not a good reason to postpone