Hello dear student,

yes definitely if you will start preparing for the Neet exam which will be held in next year as you said currently you are studying in class 12 so will you will be eligible to give Neet exam in the next year only. even if you start preparing now there's a good chance that you will be able to crack the Neet exam what you can do is thoroughly study the books which is NCERT maximum of the portion that is asked in NEET comes. and you can definitely do MBBS from a government college as many students through their MBBS from government colleges itself as they are affordable and the studies are up to the mark in government MBBS colleges. So as far as the cutoff is concerned as 2020 have not happened yet so here I am attaching a link where you can check the Neet cutoff for 2019 2018 for both MBBS and BDS for the different categories which is general OBC ST SC and ST EWS category also. By looking into the cut off of list you will get a fair idea how should you prepare and how much marks is needed by a student to get admission into a government medical colleges in Karnataka. Also I would like to add another thing here that every year cutoff changes and usually it increases by 15 to 20 marks so keep that also in mind while checking the cut off list of previous years.

https://medicine.careers360.com/articles/neet-cut-off

Thank you