hi bro , since you are ascience student you have common subjects like pysics and chemistry so you can also apply for maths by taking long term course in maths subjects and writing the exam in the next year , you can also write in the same year but as you are ascience student you would definetly not having the concepts of maths and you cant get passed out , so if you take long tem coaching in the period of 1year you can completly concentrate on maths concepts and you can definetly learn them easily in a span of one year and you can easily write the exam and get passed out , so hope you will have success in your future and all the best for your comming exams bro