Good for you for testing! That's the way to keep your kitty safe, regardless of what your vet says. These numbers look fine for now. You don't need to change the insulin dose right now. When you do a full curve, we recommend testing before the shot and every 2 hours (or every 3 hours if you can't manage every 2) through the 12 hour cycle up to and including the next pre-shot.
We can help you with advice more easily if you set up a spreadsheet according to the instructions here:
http://www.felinediabetes.com/FDMB/threads/fdmb-spreadsheet-instructions.130337/
There are techies on here to help with that if you need it. Until you have a spreadsheet set up it's easier to see your data if you put it all in a vertical column as follows:
Yesterday:
AMPS 251
AM dose 1.0 u
PMPS 361
PM dose 1.0 u
I don't really understand the sequence of the other data here. You'll have to clarify.
Today:
AMPS 329
AM dose 1.0 u
PMPS 352 (one hour late)
PM dose 1.0 u
+6 168
Is the above correct? You seem to be dosing AM very early and PM mid-day. Is this to accommodate your work schedule? It's also best to give shots as close to 12 hours apart as possible.