Hello aspirant,
Taking Bsc computer science without studying computer science in plus two is not difficult. There are many online courses and tutorials available where you can learn coding and basic computer science. It is true that those who had CS for higher secondary will have an upper hand than the others, but it doesn't mean that other students can't be bright. Just learn your basics and go for it.
The situation is similar for B Tech also. Those students who have already learned coding will have an easy understanding of syllabus and can perform well than others. So, before going to the course or during the first year, try to master coding as much as possible. If done correctly, B Tech CSE is a wonderful course and can be completed by anyone willing to work hard.
Hope this was helpful
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