B.Tech

You score is good enough to explore about -
- IIT
- NIT
- CFTIs
- NITIE
- DTU
- IIIT
You can target top 50 engineering colleges with this.

Last year 2022, the cutoff of LNMIIT for B.Tech CSE branch goes between 135 to 145, the JEE main percentile would be around 95-96+

If you clear that you can clear JEE advance then go for IIT's without any other thought. Any there are many prestigious engineering colleges that give admission based on JEE Mains
You can refer:
Top NIT's
DTU, NSUT, Jadavpur WBJEE and IIIT's

As for government. Engineering college the candidate must be appeared in respective government Engineering entrance exam. For most of the government. Colleges JEE Mains is sufficient. But some colleges conduct their own entrance exams. Like WBJEE COMEDK etc. Now some private engineering colleges can give admission based on 12th marks. But through JEE Mains you can also get good private college. B.Tech from CSE is top notch branch nowadays so your child has to grind hard to present his skills and get admission in superb college.

April 6 JEE Mains is the date for both the courses, B.Tech and B.Arch.

With this score, there is nothing waiting for you. It's very hard to get into a government college. But you can apply for private colleges.

It is not easy to get an NIT but you easily get IIITs with this rank. You should try to upgrade your marks in the 2nd session. So focus on that.

You easily get into NITs and IITs. Just focus on 2nd season and upgrade the grades. After that you should focus on JEE Advance and get into IITs.

I think GATE is the best option for you through which you can get into IITs and NITs.