I travel to remote areas in Southern Africa often. Get travel medical/evacuation insurance. In order to cover a preexisting condition, you need to get it within a week of your first trip payment. Read all the fine print so you are covered. I use www.insuremytrip.com. Unfortunately with a preexisting condition you need to insure the travel, you can’t just get med/evac. It adds a lot to the cost but no one should travel without insurance. Anyone can get hit by a bus. They will transfer you to better hospitals once stabilized - even other countries.
I rarely suggest it, but ask your Dr for a Cipro prescription and fill it. For bad “stomach bugs” it can be the only thing that helps. Drink bottled water, stay in higher end hotels/lodges with purified water, stay away from street food. I’m bad about those - I drink tap and eat everything (low carb, real food). Take it only as directed by your dr. It’s not an antibiotic that should be taken “willy nilly”.
Get vaccinations recommended for the area traveling. Malaria is common in Asia and take recommended actions. (It’s almost eradicated in Southern Africa - very exciting!).
A prescription written by a U.S. dr is not valid overseas. You will need to see a dr and get an rx in most places you travel.
Sign up with the State Department Smart Travel (STEP) program when you travel. I’m not concerned but I also include dates of travel through airports. It just lets them know you’re there and easier to reach out, or they’ll reach out to you, for help if you need it. I let them know I have T1D n the form.
Get an unlocked cell phone and buy a local Sim Card for making calls in addition to your regular phone. That way calls are cheap and people can still reach you. Text is best.
Make sure your fellow traveler(s) know how and when to use glucagon.
Know the airport, security and flight rules for what you can carry on. It’s different everywhere. European airport security requires insulin not used on the flight be packed in checked luggage - I won’t do that so plan well. It’s my biggest travel problem. I try to only travel with carry on - luggage gets lost too often. Some of our trips we’ve packed up a cooler instead of luggage.
I take a soft sided cooler for snacks, drinks, etc on planes and everywhere. Sometimes a Frio is not enough to keep insulin cool.
I’m sure I forgot a thousand things. Mostly be flexible and have fun. For a couple of years after my dx we stayed in areas with good infrastructure, now we are back to our adventurous selves. We still plan to retire to S Africa.
I’m not sure why you weren’t concerned before your child was dx. It’s the same for you as for a kid.