Definitely don’t cancel! I have T1 diabetes and travel all the time.
Some other things to consider:
- take back ups of everything. A spare CGM, at least a few days extra of any medication.
-purchase travel insurance that includes the diabetes diagnosis
- all medication goes in carry on. As do replacement CGM. Depending on the model of CGM it may not be able to go through metal detector or Xray machine. You can request a pat down and visual examination. Allow extra time for this. I wear a Dexcom G7 and it is fine for metal detectors etc.
- Be aware that heat, unusual activity may lower or raise blood sugar levels more than normal. Have some hypo treatments handy (smarties I think are common in the USA. I use mentos).
- note from the doctor that specifically states medication and if the CGM can’t go through airport security machines can be useful (although ive never been asked for it).
Enjoy your trip!