The timer still exists during the execution of that timer.

Code:
//timerxyz 1 3 echo -a current timer is $!ctimer remaining reps $!timer(xyz).reps sec $!timer(xyz).secs delay $!timer(xyz).delay commandline: $!timer(xyz).com


Even if there were future repetitions of the timer, you can use the same timer name to redefine an existing timer into being anything you wish.