Make the most of your experience. Much of your work will be self-motivated and you will need to be willing to put in effort. From my experience, supervisors do not want to overwork the interns, and will provide you with a lighter work load. my recommendation is to not be afraid to ask for more work/projects if you feel you have extra time throughout the day. Sitting at your desk being bored is not a good way to spend the company's time or more importantly your time, because when it comes down to it, you are primarily in the internship/co-op to become a better engineer (or whatever role you are in). So my big piece of advice is take responsibility in your own success and development. Your supervisor does not know exactly what you need, whether it be more work, less work, more tools, more connections, or anything else. However, they are very willing to support you with those needs, you just need to vocalize it.