You still can do better in neet only in one year if you follow following strategy.
1) first of all download the syllabus,analyse and read it carefully
2) download the previous year question papers and read it
3)know the weightage of chapters and toppics and prepare it well from those whose weightage is more.
4)and at last I think focus more on bio and chemistry instead of physics because from that two subjects you can score more marks than physics.
If you did this u will get marks.
Thanks