Nadine
Short of running a full curve you can do spot checks over several days. Get a +1 , +7 & +11 one day, a +2, +6, +10 another and so forth until you have a complete picture. sometimes those normally forgotten tests like the +1,+2 and +10, +11 will reveal more than a full curve will. Especially if there is a chance the dose is just too darn high because you will see the check mark pattern that says rebound.
Just trying to throw out random ideas that might help.
Mel and The Fur Gang