Hope you enjoy your Fine Arts course, but I'd caution against chosing any course on the basis of low numbers of contact hours per week. I did my BSc Marine Biology before diagnosis, which involved 2 or 3 hours of lectures 5 days per week, plus lab session of 3 hours, 4 afternoons per week, plus field trips on ship and shore. After diagnosis, I did an MSc, which involved 2 terms of at least 3 hours per morning of lectures, plus statistics, computing practical sessions 4 afternoons per week etc. I only told my MSc tutors about diabetes because we had 3 hour exams, and I did want the option to eat if necessary, which it wasn't, by the way. I lived with a friend for first month, then lodged in hostel, where I checked I could leave insulin in a shared fridge. Last 5 months of course involved living in Northern Ireland for 5 months where, again, access to a fridge was the only thing I needed.
I hope you will be encouraged to know that life with diabetes & insulin gets easier, after honeymoon phase, when things settle down. What are you doing for the rest of your gap year?