Did you get my earlier post about international travel? I took his meds in my carry-on.  Except for a second set of back-up meds in the checked baggage, just in case my carryon was lost or stolen. I had back-up solucortef in the checked baggage also.  I would bring extra meds than the length of the trip. You can quickly get more back in the US, but it would be a challenge to get it quickly abroad since you’d need a prescription from a doc in that country.

Good luck with the kids and travelling. I’d be stressed out just to travel with all the kids and a baby, just add a little CAH for that extra kick of stress for Mom. At least it is winter in Bolivia, so you won’t have to worry about the heat.