It's harder for vets to argue against solid evidence. You've got the spreadsheet BG numbers OK, Lucy, but you can build a more solid evidence base for an insulin Tx change if you also do some secondary monitoring of food and water consumption, weight changes, (lack of ) activity, sociability/alertness/engagement, low mood, crankiness, hiding, etc., and make a comprehensive but concise log of them each day in the Remarks column of Squallie's spreadsheet. In particular, it can be very helpful to observe whether there are significant differences in Squallie's clinical signs over a cycle before onset of insulin action, during its period of peak effect, and also when the dose is wearing off. Over a relatively short period of time it should help you to identify whether there is a pattern of negative effects that can be tied to the Vetsulin; and you can share the documented findings with your vet when arguing for a switch to a different insulin. (See the early part of Saoirse's spreadsheet to get an idea of things I noticed when she was being treated with Caninsulin (UK brand name for Vetsulin): might give you some ideas of what to check for.)
.
