Hello,

Yes, you can change your preferences and option until October 15, 2020. In mock allotment you will know the probable allotment based on your preferences. So based on the mock allotment result you can change your preferences. Considering the previous year cut off you have chances of getting seat in

• Indian Institute of Technology Bombay: Environmental Science and Engineering
• Indian Institute of Technology Mandi: Engineering Physics
• Indian Institute of Technology Kharagpur:Mining Engineering
• Indian Institute of Technology Kanpur:Materials Science and Engineering
• Indian Institute of Technology Madras:Metallurgical and Materials Engineering

Cut off changes every year depending on number of candidates qualified, difficulty of exam and number of seats available etc.

You can use our JEE Advanced college predictor to know the colleges in which you may get seat https://engineering.careers360.com/jee-advanced-college-predictor?icn=QnA&ici=qna_answer