Here's the thing, I've read a whole lot of things tips for this but none have worked for me, so this may not work for you either but, there's no harm in experimenting, right?
Get the question papers
Now, look through the papers...
You need not set a timer and practice these questions but instead, check for a pattern or any format.
Like, a question is being repeated for every damn test and you haven't studied it? It's likely that it will be asked for the next test.
You see questions from certain lessons being repeated only from the same section? Focus on it.
And for this, you don't even need like previous year papers, even the mock tests or suprise quizzes can be used to identify which lessons are important.
Search for a pattern, focus on it and shape it
Then, when you've mostly gone through all the papers, go through the questions which they've repeated like once or twice and be sure that you can answer any question from those papers you have. You can go through the rest of the material a little slower.
Mind this that all tips may not work for you and that is completely fine :)