Dear Prakash,

NEET and JEE Main are one of the competitive level exam.

In order to score good marks in your exam you should start your preparation by NCERT books as syllabus is based on them. Solve all the exercises which are give at the end of each topic.

You should work on your concepts. 

Apart, from NCERT you can recommended below books

Physics- HC Verma

Chemistry- OP Tandon

Mathematics- RD Sharma

Biology- Trueman's Biology, Pradeep Publication and objective biology by dinesh. 

MHT CET is a state level exam. In order to prepare for MHT CET exam you should refer your state textbooks. 

There are many changes in MHT CET this year. so, you should plan your studies accordingly. 

According, to the new changes 11th class will hold 20% weightage and 12th class will hold 80% weightage. There will be no negative marking and MHT CET level is raised to JEE Main level.

You are planning to give so many entrance exams so it will be good if you make your proper time table according to your comfort and include all the topics as per your strength and weakness to complete your course on time and so that you can prroper time for revision. 

If you want you can set your daily and weekly targets. 

All the best for your preparation and exam!!