I wouldn't conclude there isn't progress - you don't know what happened mid-cycle, so it's hard to draw too many conclusions. That's actually some really nice hang time til +14, no zooming, which is interesting, and good! Sometimes if they get better #s (which could have happened overnight last night, or during the day today), they will run higher for a cycle or two in protest, so it's possible that's what you're seeing now (I'm not sure, but it's possible - a lot of times you'll see red #s when that happens).
There's nothing magic about how long to hold a dose. You can raise as fast as you want really, and you can raise by 0.5 increments instead of 0.2s if you want. Because you've seen some blues along the way I'd probably stick with 0.2u increases approximately every 3 days, but that's me. If you want to go faster, go for it!
If you do, I would recommend you keep getting spot checks when you can in the early half of the cycle just to be sure you aren't hitting low #s unexpectedly. As long as you know what to do if you get #s that are lower than you want (feed a few bites of LC or HC depending on the #s and the point in the cycle where you are, and if you are seeing scary lows, retest more or less every 30 minutes til you are past nadir time), it's a managed risk.
If it were me, I would probably try to get in a spot test somewhere in the +4 to +7 range, and as long as that isn't in non-diabetic #s, I would go ahead and raise to 1.4u. I can't say that's the only answer, the options are pretty wide open, how long you want to hold the dose is up to you, and also how much you want to raise by.
On the timing, PZI is really flexible - you always want to shoot on a rising # past nadir time. If you shoot early, you lower the dose a bit to compensate, and if you shoot late you can raise the dose a bit to account for the loss of overlap. With Bix, if I shot anywhere around +11 to +13 I would keep the dose the same, at +10 I would lower maybe by 0.2u, and if at +14 raise by maybe 0.2u. With Bix, on a late shot he would almost always run high, even with the increased dose, and the next PS would be high, and sometimes it would take a couple cycles after that to get back on track.
On the whole, I like shots that are a little early, especially when they are in higher #s, sometimes a shot at something like +10 can make all the difference in gaining some overlap with the last shot, and sometimes you can get really good results off that. If you shoot at +9 or earlier, I would definitely reduce the dose a bit, since the results can at times be dramatic. And if you shoot then, you want to test to be sure the #s are rising. A lot of people have used early shooting strategies with PZI to get the #s down, even when they don't need to schedule-wise. For a lot of cats, PZI just doesn't last the full 12 hours and shooting early can really help.
With your schedule, you will probably need to do some experimenting and data gathering to figure out what works best. If you can pick to shoot early over late, I would go with early. But if it's late, no big deal, you will learn how to adjust the dose to get the best effect you can from the insulin.
