Revise

It is very smart to work consistently throughout the year. This is both true of revision of past topics and new curriculum. This maximizes the comprehension of the subject. If your plan is to only cram before an exam, you will lose out on a lot of learning due to the lack of revision.

You must be exposed to new information six times before it is added to your long-term memory. Thus you need revision to truly learn something. Cramming may give you good grades in the moment, but the knowledge fades shortly after.