Hello sheeba

congrats that you got a better score in jee mains 2019.I feel that it is the best score you have got even though you did not study for maths plus two.I hope that you are good at maths so if you start your preparation from now onwards i think you can grasp easily because you have done well at your jee mains even though you have studied biology.You can do it if you mostly concentrate on maths for your advance preparation.so,it is better for you to apply for  jee advanced 2019.

ALL THE BEST.

Hi sheeba

thanks for asking your query,but for studying engineering maths is the basic subject and you have done your 12th in biology therefore for your help i am sharing you the link ,please go through it

https://www.google.com/amp/s/engineering.careers360.com/articles/jee-advanced-eligibility-criteria/amp