Suvi R.

Unless you have done  btech from some reputed institutes of India like the IITs and the NITs  ,btech these days has just become a graduation degree.So after doing your Btech ,if you dont want to give any of the exams like GATE or CAT,you can  look  for oppurtunities in the field of journalism(you have to pursue mass -com),or animation(it is also growing rapidly ,remember how Bahubali movie made 100s of crores )  ,or you can try the field of fashion management,you can become an android app developer or a social media manager in those IT giants,or you start something on your own  and become an enterpreneur.Oppurtunities are endless ,only you have to explore them.

there is no fixed time limit for that,generally who have to write UPSC  start early ,just after entering graduation and thoroughly start preparing and understand their weaknesses and eliminate them,those who say that they cleared UPSC in their first attempt are actually hiding the fact that they have been following UPSC all this time while doing graduation.

my strategy for UPSC prelims next year would be to first go through the ncerts,then laxmikant for polity,bipin chandra for modern history,sri ram ias notes for economy,shankar ias for enviroment ,all of this and daily habit of reading newspapers and making notes of them while sticking to the syllabus is really mandatory.and the most important thing is to appear for mocks and work on your problem solving ability, you can refer to vision ias for gs test series,they are the leaders in this.