How is your SpO2 ? Mine at 1000 meters is only 92% at best and goes below 88% when in an airplane ?
I carry an oximeter when climbing. At 5500 my reading was 78%. A slow ascent always helps it to feel easier.
I wonder if low sats contribute to poor glucose control. Its hard to assess as there are so many other competing factors…such as tiredness, lots or exercise, new food types, altitude affects on the pump?
Are you sure this is safe ?
I don’t have a pump, but my Dexcom CGM is accurate at 4,200 metres, the highest I’ve been. The problem I have with hiking steep mountains is very low BG. I drop so fast that I have to pretty much eat continuously while hiking/climbing. My T1 son notices he injects quite a bit less insulin at altitude or when mountain biking.
Not very helpful but it’s all I have. Safe travels, wish I was going that high!