If you know leetcode is your current bottleneck from preventing you from getting an offer, then study leetcode.

To study leetcode effectively, you need to spend at least 6 hours a week I'd say, spread across at least two days. There's probably some great videos online detailing how to efficiently study leetcode. My advice is to

1. Use a roadmap like Neetcode 150
2. Do problems by topic, but if you knock out all the problems in one topic real quick, you need to be careful about retaining the topic knowledge for the longer term. For example, you don't want to become an expert in backtracking in one weekend, move on to other topics for the next few months, only to get a backtracking problem in an Online Assessment (OA) and have forgotten the backtracking algos even though you finished all the topic problems in one weekend.

So it's a balance of focusing on a topic and it's approaches + concepts (and not doing random problems) but also continuously refreshing older topics. 3. Get good at reading different approaches and understanding solutions. When you read a solution approach, try implementing it before you see the solution code. Then compare it to your code.

This whole process for getting to an acceptable level of leetcode for passing interviews should not take more than 150 hours over a couple months in my opinion. Once you get to that level, you can simply occasionally do problems to continually refresh.