I'm 32, but it took me a LONG time to get through college, so I'm not far out of date. LOL.
1. Don't live alone. Surround yourself with people you trust. Work harder to maintain the best control that you can. The implications of having a severe low can be much worse as an adult, and as a man, in particular. I was a girl, and I got away with a lot more than you can. The police/EMTs took me to the ER when I had severe lows. For young men, sometimes they take you to jail. Especially, if you ever take a swing at somebody. In my Midwestern town, sometimes diabetics die in jail from hypo. So, be careful.
2. Drinking can be dangerous for diabetics for many reasons that you might not have imagined. Drinking will cause your bg to get low, so consider decreasing your basal rates.
3. Chronic illness will probably, at some point, affect your grades. That is NOT the end of the world.
If you do much reading of the posts - you have prob noticed that there isn't a ton of knowledge about diabetes among civilian populations. Did you read Troy's post? https://forum.tudiabetes.org/topics/my-boss-thinks-i-can-cure-my... ? If I had to do it all over again, I think I would encourage him to advocate for himself. Don't let the stupid college Disability Office tell him how this works. They don't know anything. You could send the college Disability Office a short email stating how you are planning to handle a 'low blood sugar during a test' event and what accommodation you think that they need to provide.
Also, if your bg gets low during a test, I suggest that you just take the 'hit.' You can't ask to retake the test once you've put eyes on it and if you can't control your bg well enough to avoid that event, then you should be more worried about #1 than grades.
If you find that you definitely may need accommodation, know that it is going to be much more difficult to explain your medical condition and any accommodation that you need, to a foreign doctorate of computer science than it was to a teacher in the public schools. I don't know what you do.
I once had a pretty intense partial seizure during a test. I couldn't even write my name on it until after it was over and my hand writing looked like a 7 year olds. I might have spelled my name wrong. I couldn't form sentences or thoughts well enough to speak when I handed in the test so I just went and got myself a pizza because my bg was 60. About 20 min. later, I returned to talk to the instructor. She had a doctorate in mathematics and she was Chinese, so there were already some major gaps in our being able to communicate, but in the end, she said, "You need rest," instead of saying, "You can retake the test tomorrow because you are obviously not in your right mind," like I hoped. I don't think you can pass a class with a 0% on a test, so I got a 'medical withdrawal', from the Disabilities Office, but I think they required me to withdraw from ALL my classes as a condition of taking it. THe policy was, I think, meant to accommodate 'major medical' events, like if someone got in a car accident and they were out of school for 2 months. That was bad news for me.