Neet is the only entrance examination conducted in India for admission to all Medical, Dental and Ayush Courses in medical Colleges of India and Abroad. Last year, there were exams like AIIMS MBBS and JIPMER MBBS, for admission to AIIMS and JIPMER medical colleges particularly. But all these have been scrapped and has attached to Neet and Neet is now the only medical entrance examination in India. From this year i.e. 2020, admission to all medical colleges, be it government or Private, or AIIMS or JIPMER, or AFMC, Neet score is needed. If you wish to join BAMS or BHMS, then you've to appear for Neet. All the colleges of Maharashtra rather India offers admission to BHMS and BAMS through Neet only. You can check the colleges here http://medicine.careers360.com/colleges/list-of-bams-colleges-in-maharashtra
http://medicine.careers360.com/colleges/list-of-bhms-colleges-in-maharashtra
The syllabus consists all topics from Class 11 and 12 PCB Group. CBSE has reduced the syllabus from Class 9 to 12 by 30%. But NTA has not yet announced any such notification to reduce the syllabus of Neet. But it seems the syllabus of Jee Main and Neet will also be reduced keeping the core concepts unchanged. The chances are quite high. But until NTA releases any notice, it can't be said properly. Please to hear this from the authority. Until then you can prepare from NCERTs, as these books are recommended by top educators for having clear concept in all topics.