Hey Pranav,
After your diploma you can get admission in your B.Tech course as a lateral entry.
Various private engineering colleges accept this lateral entry.

You can visit the site given below and see the list of some private engineering colleges in MP
https://engineering.careers360.com/colleges/list-of-private-engineering-colleges-in-madhya-pradesh

So basically you can get admission easily in 2nd year B.Tech course after your diploma as lateral entry.

Hope this works
Good luck!