I came here to comment regarding inflammation, something I suffer chronically myself so is always at the forefront of my mind, but just saw the @DrBB beat me to it. I’ve noticed that when my flare-ups are worst, the immune response that causes the inflammation also kills my infusion sites faster. I can only get two days max, often one, from a site then. I’d ask your doctor to check for inflammatory markers like CRP (c-reactive protein).
If that is your problem, I highly doubt a different pump will matter, since all the infusion sets come from the same place. The things that help me is a prescription anti-inflammatory, Celebrex (celacoxib). I also take an over-the-counter enzyme blend of nattokinase and serrapeptase that digest the proteins in scar tissue. I absolutely love the Doctor’s Best brand called Natto-Serra. I’m not affiliated with them by any means, on fact, I think the supplement is recommended for heart health or something entirely different. I went looking for it after stumbling upon the enzymes in my research. I swear that stuff is my miracle, I would give up every prescription I take (okay not the insulin) before I’d give up the Natto-Sera. Granted, I mostly love it because it gives me movent back, but there is a distinct improvement to my infusion sites and how quickly they heal/recover, too. https://www.amazon.com/gp/aw/d/B00DBEVTDE?psc=1&ref=ppx_pop_mob_b_asin_title
As much as I love my Tandem pump, I don’t know if you would appreciate the difference in occlusion alarms. Earlier version of the X2 have been criticized for too many occlusion alarms. They replaced my most recent X2 because of occlusion alarms. It wasn’t that big if a deal, but I was most definitely getting them more often. I called tech support, mostly because I was sick and crabby and feeling less tolerant. It alarmed over the phone during one of the troubleshooting steps, and I was told that since they did a software patch, there should be zero instances of occlusion alarms anymore without a definitive blockage. I had to wait an extra day for replacement, because he had to go through the CDE-authorized replacement warranty loophole, since the pump never threw an error code indicating malfunction, but still had an occlusion-free replacement in two days. That said, the X2 is great at detecting real occlusions. You won’t be 400 when it finally decides there’s a problem. It will give an occlusion alarm early, which I think most people will ignore at first, hoping it works out it’s problem in it’s own. However, if there is a real occlusion (and you didn’t act on it when first indicated ) Control-IQ will ramp up your insulin you keep you from going too high. After a little while, you’ll get another alert where Control-IQ tells you it’s failing to keep you in range, check your infusion set. That’s when I know the site is really toast and needs changed (sometimes I’m hoping it’s just a bad sugar day before then). So you might dislike that the X2 gives you just as many or more occlusion alarms, or you might appreciate that you’re getting them before you’re 400 and can act sooner.