7-8 months of consistent serious study is enough.
Its not the quantity of time, but the quality of your study and your sincerity that counts.
I attended classes at IMA Trivandrum. All their notes were very helpful
Anatomy : Arivuselvan Sir's notes + Across
Physiology : Sarita Madam's notes + Across
Biochemistry : Sreekumar sir's notes + Rebecca Madam's book
Pharmacology : Sunil Sir's notes + Sparsh Gupta
Pathology : Sparsh Gupta
Microbiology : Apurba Shastry
Forensic : Across
Ophthalmology : Sunil sir's notes + Arvind arora
ENT : Shibu George sir's notes
SPM : Vivek Jain
Medicine : Hari Sir's notes + Mudit Khanna
Surgery : Ravi Sir's notes + Pritesh Singh
OBG : Sakshi Arora
Paediatrics : Arvind Arora
Orthopaedics : Apurv Mehra
Skin : Arvind Arora
Radiology : Arvind Arora
Psychiatry : Arvind Arora
I used to google images of a new topic I was learning so as to help me remember it better and cover the image based questions as well.
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Yes. I wrote AIPGMEE 2016. I was totally unprepared and got some 6k-7k rank. The classes at IMA Trivandrum made my concepts strong and gave me the confidence to approach MCQs. I made sure I completed my portions by the end of September and started revising after that.
I went through maximum number of images while I was studying a topic which helped me through the image based questions.
There is no point in just going on reading, without revising, whatever you have studied. Dedicate an hour everyday, before you go to bed, to revise whatever you have studied that day. utilize the last 2 months for repeated cycles of revision. Learn nothing new during this period. Go through the most volatile and high yielding topics (like IPCs, biochemistry cycles) in the week preceding your exam.
Took all the mock tests of PrepLadder. Because of the huge number of aspirants taking the exam, I could assess my level of preparation.
The difficulty level in these exams were the same as that of NEET.