sir jaise ke ham abhi vala form nahi bhare hai mai puchhana chahata hu ki ab ise sal aur aa sakata hai to orm bharane ke liye

Dear student,
You need to worry if you have not filled the application form for January session, because you can still fill the forms for other sessions. The application window will again open for march, april and may session and you can apply for jee mains then. The application window for march session will most probably open in the last week of February, for april in last week of march and for may in the first week of may tentatively. You can apply for all the sessions at a time or separately for each session.