I feel your frustration. It could be that your ideal dose is closer to 3u, but since you've been at it with pz for 6 months without any real progress aside from that great blue ps earlier this month, I don't see any real downside to an insulin switch. I think I'd suggest levemir over lantus mostly because i've heard it's a bit more flexible, which you need with your work schedule. The protocol does recommend that you test at +3, 6, and 9 for the first 3 days. I guess some cats are really quick to respond to it. So I would suggest that you start it at the pm shot the evening before you have 2 days off. I hope your vet is open minded to a switch. That's great that your vet tech makes housecalls!