Itsm is a dry subject!! So what iam doing is writing the answers in short notes and marking typical words and understand the meaning.. then reading it repeatedly!! Even Saket Ghiria sir revision videos available for both It and Sm are very helpful!!! If u didn't get any question just leave it and switch to some other question!!! Then later cover what u have left... i think it may help!! :)
since your EIS is powerful , use it as a weapon to clear this subject but it doesn't mean you should leave SM you better read chapters you are comfortable with & if you are unable to remember just make some short notes and there are lot of revision notes made available to the students , you can also refer them and make sure you do EIS with 100% clarity... All the best