Oh I think I misunderstood and she didn't eat since shot time. Well I'm not sure why she is higher then at +6 but I wouldn't worry about it too much since hopefully we won't ever see this dose again :mrgreen: and hopefully soon you will be able to make a food switch & drop the dose down.
It's usually better to transition the food over several days - starting like you did tonight with a little bit, then gradually increase after a day or two. If you go too fast, yes, liquipoo :? is often the results. It will be a major change too in fiber levels, and I'm not sure how that might affect things. I would lean towards transitioning on the slow side, maybe over a week or so. Of course I tried to do that with my kitty but as soon as he caught on that the canned was tasty, he wouldn't touch the dry, so he transitioned in like 2 days (after months of being unwilling to even try canned, go figure).
If you end up doing a partial food switch be sure to change the dose as well - no 8u or anything if she is only eating 1/2 the amount of dry she has been. Cut the dose at least in half, and I think it will be easier if you go the 1u route, though that may be too little insulin, but it's just an unknown right now. Hopefully some others will chime in with their thoughts on it. You may want to start a new thread tomorrow with any questions you have, or asking for suggestions on the best way to transition.