sounds like you might have to rethink using an insulin pump, displayname. What does your health care team say about this failure after such a short time of insertion? I only had intermittent failures of insulin absorption on a pump when I used those darn cannula sets, but I know u already are using steel needles, so there isn’t much left, in practical terms, to fix your issue, that I can foresee, other than going on long acting and short acting injections. Ugh! You definitely have my sympathies.