Do you know what the in-class task will be? If its a test, just try to access as many different question types as possible to spot patterns, but ensure the depth study component (assuming its worth more marks) is mostly completed and to a high standard when you start trying to do questions. This was my strategy, but it may not work for you.
My y12 task 2 was a depth study on the motor effect in which we had to build a motor and create a set of annotations for the motor outlining what each of the components did. The second part of the task was a test (which was created badly as it came from questions that we already had access to and it was focused on a single inquiry question) but I just tried to complete as many questions as possible. Managed to get 100% but the task was very easy to get high marks in.