Helo brothers ... I have some serious problem please solve it . I am in great depression hope you all help me please read description.

Hy dude...don't take too much pressure. Pre-boards are only for practise to work on your weak areas.
For pre-boards don't take stress bt u have to give it nd knw about ur weak areas..thenafter just go through NCERT for boards which is also helpful for mains. Check weightage of each chapter nd make ur plan that for which one u have to spend more time. Don't forget to solve previous year papers. Hope u will get good grades. Gd luck!!!