Yes ,you can ….! Only if you follow the points mentioned below .
1)Do not waste more time thinking about the precious time you have already wasted .
2) Make a proper timetable and follow it in a disciplined manner.
3)DO NOT PROCRASTINATE.
4) Read NCERT biology thoroughly .
5) Practise Previous year questions for Physics and Chemistry as much as you can. ( It has helped me lot )
6) Study the weightage for every lesson and topic and study accordingly.
6) Give atleast one test every week to keep a check on your preparation.
7) Keep yourself healthy and motivated.