I'm going to take a stab at the whole "test/feed/shoot" thing.
You can feed Loki as many times a day as you want to. You can feed him any time, day or night, except for the two hour period prior to his AMPS and PMPS test.
Those are the two tests per day that you want to get a number that is "free" from any food-induced increase in BG.
When you feed him, it is perfectly natural for the BG to increase. Once he starts digesting the food, he turns it into "glucose" so that his body can absorb the glucose and use it to provide energy to make everything work. It takes about two hours for that to happen. After that time, if his pancreas were working normally (i.e. if he wasn't diabetic and all systems were functioning correctly), his BG would have dropped back down to "normal" levels. In a non-diabetic cat, it probably happens even more quickly.
You do NOT have to wake up two hours before AMPS and feed him. What you really want to do is this.
Wake up just before AMPS. Make sure he hasn't eaten for at least two hours. That will give you a "fasting" BG number. It's what it really is, free of any influence from eating. Then you test his BG. That number is the number that will tell you if it's okay to give the shot. And it might even determine how big or small a dose you give him.
After you get that test, you have a choice to make. Is it high enough to give his normal dose? If so, then you feed him, and give him his shot right after, or while he's eating.
If the number is high enough to shoot, but you don't feel comfortable giving a full dose, you have two choices.
1- reduce the dose. Feed him, and then give him the reduced dose right after, or while he is eating.
2- stall. Do not feed. Do not shoot. Wait 30 minutes and test again. If it comes up on it's own, then you can feed, and shoot the normal dose, or a reduced dose, depending on what the meter shows you.
If the AMPS test gives you a number that is too low to shoot -
You have two choices.
1- stall without shooting (go through the steps 1 and 2 above)
2 - skip the shot completely.
The really important thing to remember is to not feed until you are ready to give the shot. You want the food, and the insulin, to be working on the same schedule. You don't want to give either of them a "head start". Although the way they work is "against each other", you want them doing that at the same time.
We usually say "test, feed, and shoot" in that order. But all three of those things should happen in the span of just a few minutes.
Does that help?
Carl