Hello aspirant,

It all depends on your interest between biology and computer science, if you are interested in bio and want bio to be part of further studies than don't change the subject, but if you want to do further studies with computer science then change the subject.

Also it depends on study load that you are able to handle or not as biology in addition is though to handle.

Also it is not late to change the subject if you want to change because they teaches the basics of computer science in 11th you can easily cover it with little hard work.

Now decision is yours.

Hope this helps you

Feel free to ask any questions

All the best for your future plans