sir if a student don't want to give jee mains in the month of February ,so he didn't filled the application form, my question is that is there any other date to fill the form for the month of April or May

Dear student,
Once the examination for the February session is over then the application form window will be reopened to invite application for the rest os the sessions which will include the sessions for March, April and May. If you haven't applied for the February session, you will be able to fill the application form for any session of your choice. Although the exact dates for registration have not been declared but the registration for march session would begin in February, for April session in march and for may session in April tentatively.