I was trying to make it stretch, we actually put it in on Tuesday. I was trying to push it to tomorrow, but she was complaining that it was extremely itchy and was irritating her. :( I actually posted on a Facebook page asking how to figure out how much lantus to give her and someone mentioned this app, so I thought I'd give it a try. Pretty awesome! I have a pretty good supply of everything else and hopefully I'll be able to help out others!