Well, 3U was too much.
1.5U was too much.
0.75 looks like too much too.
So you are microdosing for a while.
Good call on the 0.1U dose this morning.
Furril had a BIG drop even on that teeny tiny dose.
Try feeding at +1, to try and keep the BG levels more steady. Test then also, if you could please.
Sometimes that food at +1 helps, to slow the drop after the shot.
Still feed after the pre-shot test too. Just a snack, like 1 teaspoon at the +1 time or later.
Onset with Prozinc is usually +2, but cats can have earlier onsets than that, and Furril may be one of them.
Some tests at the +1, +1.5 time frame may tell you more of what is going on with him.
Did he eat well this AM?
p.s. New thread please, and link this one in at the top?
Long threads get the attention of the mods, and we don't want them to complain.