Hello friend,

Having a backup plan is not a bad idea but having a backup plan reduces your anxiety to face failure in life

Yes, civil engineering has very less income in private sector. To earn a good amount, you should be in government sector. If you belong to a very good financial background and your parents are comfortable with it, you should devote all your time to entrance preparation.

But if you need to earn, I will recommend you to give tution for 2 hours daily and do an internship or do part time job in private sector and give all your remaining time to your entrance exam preparation.

Now look at your financial background and decide!!

All the best!!