I am not too familiar with Prozinc so I don't know exactly how things differ on that insulin from Lantus, but I do know some things are a bit different. Forgive me if I'm giving info you know already because it applies to both insulins.
Lantus is not about the preshots. They factor in to the big picture, yes, but dosing decisions are made mostly by how low the insulin is taking the cat. You'll want to get some more tests in to find out where her nadir is. If you aren't already familiar, read the stickies and learn the concepts of: onset, nadir, overlap, duration, and carryover. It will help you
a lot when trying to figure out what's going on with Chloe on Lantus.
You'll want to read the stickies up top to see which dosing method works for your life (TR or SLGS), however, if there is any dry food in the picture, the choice is made for you and it's SLGS. TR can only be followed with wet food, it's a safety issue.
Seeing a 56 can be jarring, especially on your first day, but it is not a number you would need to desperately raise (below 50, yes). Especially if you were going to skip a shot you wouldn't want to send her higher by bringing that number up. She could have gone below 50 last night, but that is when you would raise the number, it doesn't work and isn't necessary after the fact. I would heed others recommendations that you test frequently when switching. It looks like Chloe did have a marked reaction to Lantus, it looks like it might be a very good thing for Chloe, but the only way to keep her safe is to monitor what is going on.
If you delayed the shot by 2 hours, you'll need to shoot tonight 12 hours from the shot time (7:25 pm). Lantus isn't an in and out insulin and works best, especially when you're new to using it, when you shoot consistenly (time and amount). You can work back to your original shot time by shaving off 15 minutes each shot over a few days (so 7:10 pm tonight 6:55 am tomorrow morning, etc.) until you get back. Alternatively, you can shoot 30 minutes early once a day until you get back (6:55 tonight, 6:55 tomorrow morning, 6:25 tomorrow night, 6:25 the next morning, etc.).
If you can change your SS to reflect you shot 2 hours late, it will help you and others to see what happened, trust me, you'll reference it later and want to know you shot late there or else the numbers won't make sense. You can do this by stacking the numbers in the AMPS cell (56 +12, 226 +14). If you shot 2 hours late, your +2 hasn't happened yet, it would be 2 hours after the shot (at +16).
Dry food can stay in the system a lot longer than wet food, but there's no telling exactly how long. Since you shot a food influenced number, you still want to keep tabs on her today as she could drop back down when the dry food wears off.
Ask all the questions you need to, we are here to help.
