All perfect praise be to Allaah, The Lord of the Worlds. I testify that there is none worthy of worship except Allaah, and that Muhammad, sallallaahu ‘alayhi wa sallam, is His Slave and Messenger.
It is permissible for one to make the first Tasleem after the first Tasleem of the Imaam and the second Tasleem after the second Tasleem of the Imaam because he would still be following the Imaam. However, waiting until the Imaam finishes the second Tasleem is preferable. For more benefit, refer to Fatwa 120581.