Hi,

290 marks is a good score but to increase it, you need to work on your weaknesses. Try to focus on the areas you are losing marks to, as you are already good enough to answer the other topic questions correctly.

1. Focus on the concept, read more.

2.Try to focus on NCERT. Read it thoroughly

3.Once you are done with both, then solve mcqs and check yourself

Most importantly, increase the number of revisions rather than increasing the hours of reading.

Hope that helps.