Since B.Tech is a very mathematics oriented course, so according to the regulations, you may face difficulties in pursuing the course further.

But, you can take admission into Biomedical Engineering as it's criteria is Physics, Chemistry and Maths/Biology.

However, if you want to do something easy and not so mathematics oriented in this field, a B.Sc degree in Biomedical Sciences may be a good option and you should definitely explore that.

Hope I have answered your question. All the best!