I suggested the dose skip on the 3rd cycle tonight, so you could pick the best time that would work for you, to start Tiger back on the Prozinc.
So pick the times. 11 am 11 pm it is.
But the old dose of Prozinc is not the one you want to use. You want to take into consideration the increased doses you have done on the Vetsulin, over the last month. You were up to 14U of Vetsulin, split into 2 daily doses of 7U each. That was because the 5 and 6 units of Vetsulin was still keeping Tiger in high numbers.
The Prozinc dose needs to be close to that same dose of Vetsulin, that you were doing before you split the dose into the TID dosing. So I'd suggest 6U to start for the Prozinc. You'll probably have to increase after that.
The 4u of Prozinc was doing basically nothing for Tiger back in February.
Why would you want to start back at a decreased dose that wasn't working for Tiger.