Yes, you can get admission as per 2020 cutoff for ECE branch in IIT Kharagpur . But, you have to wait upto 6th round of JoSAA counselling.

In 2020, opening rank is 532 (1st round) and closing rank is 1137 (6th round).

Also, you can use the JEE Advanced College Predictor 2021 tool given below :

Hope it will help you .