We are going on a short vacation in the mountains. Theo will do a little skiing, and sledding and also spend time in the pool pretty much one of these things after each meal for 4 days. We use the T-slim and I thought I might give him a shot of Lantus either the the first night or first morning and then just connect the pump for boluses and corrections. My reasoning is just that it will avoid having to have the pump out in the snow, falling down, or taking it to the pool as he would not have to hook up for basal. We have been on the pump for 5 months now and my main goal is to keep it simple for him. With the Lantus he won't have to worry about getting way behind on basal, but on the other hand, he probably could disconnect for 90 minutes given that he will be super active during those periods. Just wondering what people would recommend? Lantus plus pump boluses or reconnect. This is a trial run for summer where we might be at water parks for quite a while and don't want to connect back so often. Since we would just be connecting up for meals and corrections I was not going to make a new profile with minimal or zero basal. Can you program zero basal? Also will the insulin evaporate from the end of the set if it is disconnected for 8-9 hours (all night for example). I could keep it running, but if I suspend it, I was not told that I might need to prime a small amount before reconnecting if it has evaporated at the tip. Even if I try to stick with the pump and reconnections, I may try a Lantus day just to practice. I know his Lantus gets weaker at about 17-18 hours so if I give it in the morning, I will probably need a correction about 3 am in which case I might as well leave the pump connected at night and suspended, or I can give it at night.