Hello dear

You may get non core branch from home state quota in the spot rounds according to last year cut offs ( 2018 only).

If you see other than 2018 cut offs ; it is difficult to get admission in nit Srinagar.

You can see here :

https://engineering.careers360.com/articles/jee-main-cutoff-for-nit-srinagar/amp

And have a view about it.

So I would suggest you to take some backup option ( some private college or dropping a year.).

Good luck