Hi Kajal....

AIIMS registration is done in 2 phases.....

The registration began from November 30 and it is available till January 3,2019.So,the link is not yet closed for now.

Complete the registration before January 3rd.

The formalities of the registration will continue till March 2019. The candidates who have completed the basic registration successfully will be allowed to the final process.

Thank u.....hope this helps.