Hello Spandan!

If anybody wants to change his subject for higher subject then it will not be risky .The main thing is that the person is interested in that field or not or have some knowledge about it.

Hope it answer your concerns.

Feel free to aks if you have any other queries.

Dear Aspirant,
It might be risky because CSE students don't know about the mechanical engineering.
And aerospace is completely related to mechanical thing.
You have to read mechanical subject thoroughly for the higher studies.
If you want to go for aerospace,and you are a cse student ,it will be tough for you.
Thankyou