Hey there- Our 17 yr old son has decided to take a pump break this summer due to scar tissue and hitting blood vessels at site changes more and more frequently. He has a muscular build with very little fat so site options are limited. He will be taking Tresiba as his long acting insulin and humalog for short acting, via InPen. We were told Tresiba acts differently than Lantus and might take several days to take full effect. Any experiences anyone would like to share regarding transitioning from the pump to Tresiba? Specifically time of day dosing and how many days it took for blood sugars to regulate. Well aware YDMV Thanks!