Hi

Yes you can definitely leave your BSc and go for BTech.

This is because,

There is no rule that if you are doing Bsc you become ineligible for pursuing BTech.

For example,

If I tell you about JEE mains which is one of the most reputed and most popular entrance examination to Engineering Colleges

Eligibility criteria says that to be eligible  for JEE mains 2021 for BE or Btech you just must be either appearing for 12th board exam in 2021 or should have passed it in 2020 or 2019 with Physics,  mathematics and anyone of Chemistry or Biology or Biotechnology or Technical Vocational Subject.

So , even though you are pursuing BSc if you fulfill this criteria then you are eligible for JEE mains and can appear for it as well and not only this after qualifying JEE mains you can get admission in Engineering college too

Not only JEE mains you can appear in any entrance examination for engineering or can get admission in any Engineering College provided you fulfill their criteria of eligibility.

So, you don't need to worry at all you can definitely do BTech.

Thank you