Welcome to the forum Bethany Harrison. If you have already arranged travel insurance, then inform company of your diagnosis. Or arrange insurance, informing them of diagnosis.
Practice estimating weight of carbohydrate in meals, so you can use correct dose of insulin.
I prefer to use a 0.5litre stainless steel vacuum flask to carry insulin in hot places, as it protects against knocks and vibration, as well as extremes of temperature. It has to be empty of water when passing through airport security, but at all other times, filled with cool water. That's what I've done on many trips in Middle East, Central & South America, southern Africa etc.
Hope you have a great trip.