Hi Sandy!
A few things. ReliOn/human meters run higher than pet meters, but there is no comparison between the two. The lower the number, the closer the two meters will match, and the higher the number, the farther apart they will be. Because the low numbers are what's important when it comes to accuracy, and too high is too high, this works for us. It's best to stick with one meter, ideally the ReliOn simply because it's cheaper and all the information found here is catered to human meter numbers.
For new diabetics, we recommend no insulin if BG is below 150-200. This applies to both Alphatrak and ReliOn. Once you get more data and learn how Logan's BG reacts, you can lower that threshold.
Most of us here offer treats at testing time, it's why so many of our sugar cats look forward to it! While I didn't necessarily give treats every time I tested Panic, she loved that we'd have a "cuddle session" right before and after the tests, so she was hardly irritated over testing time. And there were times when she was running low that I had to test her every 15 minutes for several hours. Eventually Logan will be used to it and won't even care.
So for curves, most of us don't even do them. The reason for this is that as long as you're "spot-testing" every day - getting in every test before insulin, and at least a couple throughout the cycle - that is going to paint a better picture than one all-day curve every once in a while. Plus, there's a lot of ways a curve can be "ruined" and inaccurate. For example, if Logan got into some contraband, his BG would be running high, or if he dropped too low the night before and his BG "bounced" high, that would also be an inaccurate representation of a "normal" day. When you take Logan to the vet as well, he will be stressed - increasing his BG, and causing the vets to think he needs more insulin than he really does. Personally I would cancel the curve and save your money.
On Prozinc, we want the BG to act like a "smiley face" - a gentle curve before rising back up. We want all kitties to drop below 150 consistently during midday, so yes 251 is still a high number, however that doesn't mean Logan needs more insulin. Like stated above, he could have been having an off day. In fact I would be very wary of increasing his insulin, since his current dose caused him to drop to 32 a few days ago. I think it would benefit you to test before every shot, then sporadically each day. Here's a loose example you could follow:
Day 1: Pre-shot, +2, +4, +6
Day 2: Pre-shot, +1, +3, +5
By doing this, you will see the effects of the insulin and how low it is taking him. For all you know, between this morning and +6 he could have dropped and bounced back up. That's why "spot-checking" is so helpful. The other thing you want to do is give small snacks to help "steer" the BG safely. We don't want it dropping too fast, so you could give mini meals at +2, +4, and +6 to start, then as you learn when Logan onsets (when the insulin starts taking effect, usually around +2), and nadirs (when it drops BG the lowest, usually between +5 and +7) you can adjust meals accordingly to control the drop.