Sue it may seem like a lot of work now...but if you want the headache of treating samwise to end it would be the best if you got more tests in, did more frequent dose increases. you are not in danger of hypo if you follow that simple chart i gave you sometime back..remember NO shooting on greens and then the appropriate shot for different #'s
Let us know what your vet says.
how is your horse doing with this weather? i think of him often.