Hey there

It is rare to see students switching from BTech to medical but it's good that you are following your passion so as you are from Karnataka which is a State of relatively lower cutoff so you will have higher chances of getting a government medical College in Karnataka in state quota. Cuttoffs vary each year so try to aim Higher.

Check neet cutoff Karnataka

https://www.google.com/url?sa=t&source=web&rct=j&url=https://medicine.careers360.com/articles/neet-cutoff-karnataka/amp&ved=2ahUKEwi4yuGkgoDkAhXYeisKHXO4AcEQFjAAegQIBBAB&usg=AOvVaw2U6_E3o02t4YOQdt068Ave&ampcf=1

Check our college predictor

https://www.google.com/url?sa=t&source=web&rct=j&url=https://medicine.careers360.com/neet-college-predictor&ved=2ahUKEwiSqtyZ_v_jAhXch3AKHU-iBPQQFjAAegQIARAB&usg=AOvVaw0GP-IBP0p7uyjnJTAIrTBr&cshid=1565705186634

Good luck