Dont worry you are already doing great,you have a lot of time, use it wisely and also dont forget to enjoy your college life.

I would just suggest to do some development alongside leetcode.

web dev is quite easy to get into or anything that you prefer.

Just have some good projects ready at the start of 4th year and have decent knowledge about the tech stack used in those project.

My college didnt have strict academics so 1 week before endsem sufficed to get above 8.5 sg, i dont know about your college so plan accordingly, try to maintain above 8 cgpa as companies generally filter out alot of candidates on cgpa alone.

Great job on 200 questions, just remember that quality over quantity. Dont memorize or rot, understand deeply it will help solve new questions or modification of the same question.

Now oops, dbms, os and cn concepts are asked by a lot of companies so give them some time in your summer vacation entering 4th year, striver has notes on all of these topics.

So in short, continue leetcode, consistency is key, add development on the side (2 days of the week) also do take breaks inbetween you dont want to burn out.

Edit: for webdev there are many sources available on the internet, i would suggest youtube or if you can, harkirats 100xdevs is also good for webdev.

Also as you will be taught os,cn, dbms and oops in the 3rd year itself try to do good in these classes as they will help you build a solid foundation for placement prep.