CBSE 12th

Hi Surendranager,
If you complete the below-listed books and complete the test/practice papers, there are high chances that you will get through the NEET exam and get a government medical college.
Some of the popular books for NEET/AIIMS preparation are:
For biology section, please refer to the following books:
Trueman's Biology Vol. 1 & 2
Objective Biology by Dinesh
Pradeep Publications Biology
Prakash Objective Biology
A C Dutta for Botany (Oxford Publication)
GR Bathla Publications for Biology (Theory & Objective)
For Physics:
H C Verma for Physics
Aggarwals Concept of Competition Physics for CBSE PMT
NCERT Physics: CBSE PMT by Anil Aggarwal (Set of 3 Volumes)
NCERT-Physics Part 1&2
Objective Physics for Medical Entrances Examination (Volume 1 and Volume 2)
For Chemistry,
Modern ABC of Chemistry for Class 11th & 12th (Vol. 1 & 2)
Physical Chemistry by O P Tandon
Arihant Organic Chemistry
Dinesh Chemistry
Concise Inorganic Chemistry by J.D. Lee for Inorganic Chemistry
Objective NCERT at your fingertips Chemistry by MTG
Additionally, for AIIMS exam:
For GK section:
You also need to stay abreast of the latest happenings for the GK section of the exam. To achieve this, you must diligently read newspapers, subscribe to a weekly or monthly current affairs magazine and pay attention to the science sections.
And last but not the least, also refer to previous years question papers from the following sources:
Arihant AIIMS MBBS Entrance Examination (Solved Papers 2008-2016)
MTG AIIMS Explorer (17 Years Solved Papers) by Dr. Sandeep Ahlawat
AIIMS 17 years solved papers by Disha Publication

Devoting one full year for competitive exam preparation has its own merits and demerits. Dropping a year means that you will get sufficient amount of time to prepare for competitive exams. It will allow you take mock tests and help you to secure a good rank in competitive exams. However, one year is a long time so the possibility is that you may change your goals and objectives. You may become lethargic because of the availability of time and lesser pressure. You may waste time. If you are confident of keeping the momentum, dedication, determination, readiness to work on a plan, will to achieve your objective and support of family, you may consider dropping a year for competitive exams.

Following are career options for PCB students after class 12th:
(a) Medical, Dental, Physiotherapy or a degree in alternative medicines.
(b) B.Tech if opted for maths as an additional subject.
(c) BCA
(d) B.Sc Physics, Chemistry, Maths, Statistics, Zoology and Botany
(e) B.Architecture if you opted for maths as an additional subject.
(f) B.Pharm
(g) B.Sc Forensic Science
(h) B.Tech Biotechnology
(I) BBA
(j) BCA
(k) B.Sc Microbiology
(l) B.Sc Nursing
(m) Hotel management
(n) Fashion Designing or Fashion Technology
(o) Change to Humanities or Commerce Stream
(p) NDA
(r) BA LLB
(s) BA Mass Communication
(t) BA Social Works
You may choose any based on your interest to excel in the chosen profession.

First of all, if you address your current predicament as phobia then it'll worsen your situation. don't panic or get afraid. Physics is most student's nightmare. It's because they believe it without even giving it their best. Here are my pieces of advice for you.
1. Tell yourself that the optics part isn't that tough. boost your self-confidence.
2. First get the theory part clear. if you're having problems doing that all by yourself then take help from online tuition.
3. Read through online resources. Sometimes the bookish language is tough to understand for students but even in exams, it is highly recommended to write answers in your own language.
4. Take Free Trial Sessions From Online Physics Tutors for unprepared or tough topics e.g Optics.
5. Optics part is mainly based on theory and the numerical questions are based on the theory as well so read and practice each derivation at least 4-5 times a day.
6. Take a Break in between your preparation. Don't overexert yourself more than you should. Remeber this phobia is all in your head and it won't go away until you treat it accordingly.
Best of luck.