CLASS 11 REVISION STRATERGY?

Guys i am in 12th right now how must i start revising 11th syllabus alongside coaching tests nd all. Like each month we have 2-3 test for 12th syllabus as well how must i manage completing syllabus , preparing for the test, revise 11th advance level problems which i didnt do in 11th now i feel I have to somehow revise 11th syllabus and do hard level questions for them as well