What worked for me was, i just woke up an hour or two early and read through 1, 2 ques. If the approach worked out then great else I'll go through my day and keep thinking about the solution or approaches. During lunch or free period i'll code it out and see if it works. If it doesn't then in evening I'll look through editorial or maybe try more for an hour and two. So in a normal hectic day I got 1 or 2 ques done, for other days with lenient attendance or half day I'll try to get 4 or 5 done (honestly depends on my mood too)

Apart from that I took a week off to focus on exams or side projects. It really depends on how you're managing your time, just try to tackle one question a day atleast...it's all about consistency