I have wasted 4 months of my NEET preparation, now I have to complete the whole class 12 and have to revise class 11 also. I know it will be tough, but what are some strict tips to score at least 600?

First thing is that you should be proud of yourself that you have realised that you have wasted 4 months, there are some like me who wasted whole 2 years chilling around without even realising the cause. Now take a deep breath and start

1. If you are in drop year, then I would assume that you have read the class 12 chapters during your +2 and therefore you can continue to finish your 11th course then take up the class 12 chapters
2. If you are in school, and now they have started with 12th syllabus, go on with 12th syllabus and in between revise class 11th
3. Make a List of important chapters which carry maximum weightage in the exam and make your priority to complete them first
4. Start giving mock tests, increasing their frequency each month