Hello there,

Hope you are doing well . See , I'll be honest with you. As of now , not much time is left for NEET UG-2022 , eventhough the notifications have not been given yet, the exam has a high chance of taking place in July end or August and if not maximally in September as has been occurring in the past 2 years .

So , what I'll suggest you is instead of targetting 650+ , you atleast try to secure the cutoff score for a government medical college in your state through State quota counselling this year .

The cutoffs are increasing drastically day by day and as you mentioned that you haven't even started . Most you can do now is thoroughly study 11th and 12 th biology , organic and inorganic Chemistry NCERT textbooks. Read them and  revise as many times as possible . And if your basics in Physics are not clear , I'll suggest you to complete the modern physics part of Physics which includes chapters like Atoms, Nuclei , Dual Nature ,Semi-conductors . Apart from that get hold of a formulae book for Physical Chemistry and Physics . You don't have the time to prepare your own formula book now . Now, if you belong from high cutoff states , it's going to be a difficult job but don't give up . Just remember in the coming months uptill NEET, don't do anything else apart from studies . That's what is needed . Also , from one month before the exams start giving full syllabus mock tests , now you can give part syllabus mock test on a weekly basis .

Lastly , most important thing practice Past 10  Years Questions of NEET. You'll get a good idea of the types of questions and the question pattern. This is all you can do right now . I know it's tough but don't get nervous or scared . Just do as said and you'll be good to go .

Also , you can join a revision short course online of you wish to . With teachers ,learning gets easier .

I wish you luck and All the Best !

Hope my answer helped.