Hi

It is better to go for engineering so that you have a backup plan.

This is because,
To be eligible for SSC CGL etc examination you need to be at least a graduate then instead of any other graduation course why not not engineering in which you have much better opportunity in terms of jobs and pay.

Also,
These days it has been become very common to go for SSC, UPSC etc examination after engineering, a lot of students complete their engineering and then go for writing UPSC ,SSC etc examination and not only appear for UPSC ,SSC etc examination, they qualify it as well also and some even top the exam : ) .
For Instance, Kanishak Kataria who topped UPSC civil services examination in 2018 was an engineer.
For SSC CGL, see the toppers over the years :-
2015 topper :- Ravi shankar Singh, an engineer
2016 topper :- Amit jain , again an engineer
2017 topper :-  kaushik Raj , an engineer,

Also,
Engineering is a 4 year long course so even if you take out 3 or 4 hours a day then in that four years you can easily prepare well for your SSC examination and  can ace.

Whenever you prepare for your SSC CGL examination , you can prepare in a while manner following the below tips :-

* Know your syllabus:-  first of all to start your SSC CGL preparation ,go through its syllabus at

https://competition.careers360.com/articles/ssc-cgl-syllabus

The list of  best books that you can use to cover your SSC CGL syllabus are listed below

QUANTITATIVE APTITUDE

*Elementary & Advanced Mathematics: Kiran Prakashan

*Advance maths for General Competitions: Rakesh Yadav/KD Publications

GENERAL INTELLIGENCE & REASONING

*Verbal and non-verbal reasoning: R. S. Aggarwal

*Analytical Reasoning: M. K. Pandey

GENERAL AWARENESS

*General Knowledge: Dr Binary Karn /Lucent

*Manorama Yearbook

*Also read newspaper for current affairs

ENGLISH COMPREHENSION

*a mirror of Common Errors: Dr Ashok Kumar /Academic and test publication

*Competitive General English: Kiran Prakashan

*Objective General English: S. P. Bakshi

For details go through

https://competition.careers360.com/articles/ssc-cgl-books

* make a routine, and strictly follow it ,give more time to your weak areas in your routine . Routine will be very helpful for you as it will help you to study in a systematic way and avoid wastage of time and procrastination

* Prepare short notes :- you should prepare subjectwise short notes , it will help you a lot during your revision for your exam

* Revise :- the syllabus of SSC CGL is wide so revision is must otherwise you may not be able to recall  what all you have studied during your exam

*Practice mock test papers:- it will help you to understand the examination pattern, types and difficulty level  of questions which are asked in exam,  you will also get to know your preparation level and then can work on your weak areas to perform well in your examination.

For detailed information go through

https://competition.careers360.com/articles/how-to-prepare-for-ssc-cgl/amp

Thank you