How to get 600+ in Neet by 50days preparetion?

If you've been regular throughout two years then it's possible to get a high score. It actually depends on your own potential as well, if you can focus hard and extract a lot of work in the least time possible. It depends Upon how many revisions you generally require as well.
Your main focus should be biology. That'll fetch you the main bulk of your total marks.
Chemistry can be tackled easily if you've built your concepts in the two years.
Physics, focus on numericals. Practice variants of those. No need to do all the calculations, just see if you can solve it or not. Whether you're getting stuck or not. Don't keep on doing similar MCQs of one type of question. Save time on that and devote to other subjects.
Finally, give yourself enough sleep and rest.
Your breaks should be relaxing enough to calm and refresh your mind. Don't go on social media, rather listen to music or talk to a friend.
Work hard and it's all possible
Good luck!

This may look hard, but is not impossible .
Make a routine, study hard and sincerely.
Build your concepts and practice as much questions as you can.
Try to solve questions on varied topics.
Revise if possible!!

All the best for upcoming examinations!!

If you are strong in your concepts it will be easy for you. Start bysolving question papers . Concentrate on the subject you are confident in and work hard .Do a fast revision . All the best .

Time left is very little. Assuming you are done with your syllabus and you have clear concept on those three subjects you can now start giving mock tests online. This will help a lot. You can solve previous years question . You yourself will realize your level of preparation.

As the time is less so assuming you are done with the syllabus and all your concepts are clear and strong so you are advised to start doing the sample papers and previous year papers as these would be helping you to know the difficulty level of questions and once you are done with these papers the next step to be taken is to practice online mock test because mock papers play a vital role in the preparation because these will teach you the time management skills during exam and will also let you know where you are actually standing in your preparation.

Good Luck!!!