Hi Aspirant,

Hope you are doing great as per the question asked by you as you have made mistake while filling up the form you should definitely mail to the required authorities regarding the mistakes you have made sometimes correction window is given to the students to correct the mistakes if made any during the process as the correction window of J.E.E mains 1st shift was from 6th April to 8th April so dates have been passed you need not worry as your mistake is not very big mistake hence you can certainly get a chance to alter it in further stages and you should certainly enter all the details correctly so that there is no discrepancy in any information.

Hope you found this answer useful.Stay motivated stay positive.

All the best!