bro,

If u really want to go in ISRO/DRDO then u should take ECE/EEE  cause their syallbi are same and suitable for it. ECE  has subjects like CONTROL SYSTEMS, ANALOGS, Signals that are used in ISRO and will help u alot. No matters which college u have studied but u have to maintain a decent CGPA/GRADE.

So u should focus on your branch which is related to Their prospective and U have to give ICRB for ISRO.

See if you want to be in ISRO/DRDO you need to have a BTech degree. After that you have to pass examination of ISRO/DRDO and if selected you will be called for interview and if you clear it then you will get recruited.

So here the college doesn't matter nor a good college like IIT will give you a direct recruitment in those research organisation.

So If you got a seat in a college that is affordable by you and if you get knowledge from the college then you should stay there and complete your BTech. Also start your prep for Gate and ISRO examinations and by the time you will complete BTech you will have a good prepearation.

So you should use your time wisely. Its my thought , you have no need to follow it but what I want to say is that you should use your time well.

Have a great eve!