Oh, THAT kind of chazarah. 😉
Seriously, the Dirshu method is very effective. I may have the details wrong, but it goes something like this:
Every day, learn a particular amount, after chazering the limud from the previous day.
Chazer everything from the week on Shabbos.
Chazer all of that once a month.
This is short term, aside from any project to constantly chazer all previous limudim.