Please dont trust NITs when it comes to Department Change. The Probability of Getting your Department Changed at any NIT is quite low when compared to IITs. Secondly, in this Pandemic Situation, there is a higher uncertainity. Incase youre interested in CSE and Software, pursue CSE from NIT Calicut. Its one of the best NITs having 100% Placements for CSE. Most of the Top Software Companies, are very selective when they visit NITs and dont generally open below CSE and IT (By Top Software Companies, I refer to US Corporations, International Placements, Top Companies which visit Select IITs and NITs, 25 LPA+ Packages).

Incase you have no general interest, ECE at NIT Warangal is a good choice. ECE is a really flexible branch and exposes you to a number of Technologies, hence Opportunities across Industry Verticals, besides being a Top 3 NIT.