He should act the same. You test, feed then shoot like you do with Prozinc. No need to wait in between.
Are you giving snacks during the cycles as well as the Preshot meals?
I would suggest giving the main meal before the shot then 2 or three snacks of a teaspoon or two of low carb food during the first 7 hours after each shot.
I would also recommend doing the tests during all the cycles that I suggested above. That way you will be able to see how he reacts to the dose.
If you are testing regularly you won’t need to do a curve as you will have data from every day which is much more useful than just one days curve.
If you are going to reduce the dose to 1 unit I would recommend you test the urine daily for ketones with a bottle of Ketostix which you can buy from Walmart or a pharmacy