Hello,
AIIMS is a central institute one of the best in India and getting into AIIMS is difficult. So yes, it is difficult to get into AIIMS by preparing for a month if you haven't studied anything before. But, you would have already studied NCERT for neet or boards. So considering that you can still prepare.
You have to put away your phone and other distractions and only concentrate on your preparation. For biology, you have to do ncert thoroughly and then you can refer to pradeeps biology as this is a good book.
For chemistry, learn all the exceptions and rules in inorganic chemistry. Understand organic chemistry so that you can apply it in questions. Physical chemistry is like physics- learn the formulas and then practice, practice and practice. You can use books like Dinesh chemistry and abc's modern chemistry. But first do the entire ncert and then refer to these books.
For physics you have to complete all the questions and do as many problems as possible because this is the only key to getting good marks in physics. You can use books like fundamentals of physics and aiims explorer to do more and more questions.
As aiims also has a gk section you should know about the current affairs and certain other topics. For this you can use books like aim4aiims and general knowledge, aptitude and logical thinking for aiims.
Now, since you have only a month to prepare I feel like everyday you should start the day solving a few questions of physics then go on to do biology and chemistry as doing physics with a fresh mind helps.
Also solve as many questions as you can as this is the only way to get selected- doing more and more questions, practicing a lot.
So I would like to end by saying it is difficult to get aiims and almost impossible to get it in a month if you have no previous preparation. If you are really bent on aiims you must be ready to start atleast 6 months in advance. However you can try if you have already prepared for neet or boards.
For more information check this link on how to prepare for aiims:
https://medicine-careers360-com.cdn.ampproject.org/v/s/medicine.careers360.com/articles/how-prepare-for-aiims-mbbs-in-6-months/amp?amp_js_v=a3&amp_gsa=1&usqp=mq331AQCKAE%3D#aoh=15818776430955&referrer=https%3A%2F%2Fwww.google.com&amp_tf=From%20%251%24s&ampshare=https%3A%2F%2Fmedicine.careers360.com%2Farticles%2Fhow-prepare-for-aiims-mbbs-in-6-months
Hope this helps.
All the best.

Hemanth there is no quick solution which can get you to the top medical college in India. Aiims is the top medical college in India and to get into that you have to have the top scores and that requires alot of hardworking and studying and that is not something you can achieve in a month if you are not clear about your fundamental. Don't take it in a wrong way but start from the beginning and work up the ladder

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