We started with a diet only change for our cat, to a low carb wet food, and have been testing her blood twice a day in the hope it would go down. However, it had tested 232 and 288 all week. She seems a little lethargic and is having a bit of hind leg weakness, and after a full week of diet change, we think it is time to start insulin. BUT, we have been having trouble reaching our vet- have been calling for almost 12 hours and haven’t heard back yet. We can get Lantus over the counter at the local pharmacy. What do you guys think- should we wait to hear from the vet, possibly another full day delaying starting insulin, or should we go buy the Lantus, and simply start with a 0.5 unit twice a day dosage and monitor her blood and see how she does? I want vet support, but ultimately she is my baby and she does not seem like herself, and I want her to start feeling better ASAP.