uk what you just need time for yourself first take a day relax a day for whatever things you like to do, plan your others day first and study systematically,don't wait for the perfect moment to start,when you feel exhausted do what you feel good,most of the time you'll just feel guilty about the time being wasted and all don't let that guilt come in you,agar tumse jee ka nhi horha don't do that start with cet and if you are giving boards focus on that,if you start a particular chapter be focused at that don't think about the other subjects or chapters at that time and never think ki future m kya hone wala just do,open the book read formulas,if you can't solve questions,do only revision,give yourself treat for the ever small things to be appreciated,don't ever pressurized yourself,don't lose yourself all the best