How to review GTs? What's the best way to approach them?

How to review GTs? What’s the best way to approach them? I m unable to finish reviewing… whether to add the points, watch videos or nt… they keep pending… plz help.

I gave grandtests very systematically. If I dint know a question I dint attempt. After completion of GT i used to enlist topics that i couldn’t attempt. Then I read those topics from standard books in 2-3 days and then solved the questions. The answers I got wrong means I have read them but not understood the concept so got them wrong. I used to see videos only for those. Saves time.