Do any of you change your pump set after 4 days or does everyone change it every 72 hours religiously? Over the past three months, my father passed away suddenly, and I haven't been monitoring our 15 yr. old with diabetes as closely as usual. He was also under a lot of stress with everything going on. We found ourselves forgetting to change the set after 72 hours on several occasions, but did it the next day with no bad effects. Does anyone else do this?