Launching multiple i3 sessions on different tty

Is there anyway to open multiple DW on different tty?
Under arch linux we have this option xinit i3 -- :0 vt1 .
Under nixos we are using systemctl start display-manager.service . But this doesn’t allow us to specify which tty to use and rerunning this command in a different tty will overwrite the old launched display-manager.service.