advice that would have helped me in college:
Go for the decaf option. You're already drinking energy drinks. Don't give your body too much caffeine, as it might cause issues.
On the weekend, get out of bed early and go grocery shopping. Once you're done grocery shopping, go straight back home and meal prep. Wash the produce and put them in serving-sized containers. Make your lunches and dinners for the week. Get it done within the next couple of hours after you shop. Once you're done meal prepping, go back to bed and take a nap.
Unpack all of your things. Get everything out of the boxes. Go through everything that's in your dorm. Donate the things you don't need anymore. The sooner you get your dorm organized in the beginning of the year, the sooner you can get a cleaning schedule/organization system going and the less stress your environment is going to cause.
Learn which places are good to study in before 8am and after 5pm. On a college campus, usually there are plenty of buildings that you can access after 5pm, because colleges need to provide study space. However, learning which places are open before 8am is important too, because you might need to get some early morning studying in without disturbing your roommates.
Learn how to budget. You deserve to have fun and use your academic breaks the way you want. Save up your money, so that you can have spring break to yourself and you can have a solo vacation. Even if budgeting isn't a "big deal" in college, it makes for good practice.
Don't be afraid to talk to professors. They're there to help you. You're there to get an education, and their job is to provide that for you. Get your money's worth.
Be creative with the dining hall options. You can sneak in your own food and combine it with the food you have in your meal. For example, I brought in a rice cake and I used their peanut butter and bananas to make a PB Banana rice cake.
Similarly, bring containers with you to the dining hall. If you like the way they make apple sauce, then put their apple sauce in a container. Bring multiple plates and do a little meal prep. Get food to go.
This is more of a wish than a "habit," but try to establish a good boundary between school and everything else. Set rules for yourself. "If I can't complete at least two of these readings, then I won't go to the club meeting tonight."
This is advice from my own school: Every hour in class means two hours of studying/prep for the class beforehand. For example, if the class is 1 hour 35 minutes long, then that's around 3 hours of studying before the class. It doesn't have to be done all at once, but schedule accordingly.
Go to the school counselor. They may not be the best at dealing with specific mental health problems, but they can be a good place to vent without judgment.
If your professor requires you to submit written reflections of your readings, don't antogonize over it too much. "Eh, it probably sounds stupid but it meets the minimum requirements" is better than no reflection submitted.
Learn as much as you can about the resources your college provides and use as much of them as you can. Whether its health/medical, career, academic, disability accomodations, etc. get your money's worth.
If you want to read more, spending at least 15 minutes or reading at least 10 pages per day is a small amount that adds up over time. One of my regrets is not reading more of the books from the school library, since many of them were on niche subjects and were extremely interesting.
If you suspect that you have a learning disability (e.g. ADHD), research the symptoms and management techniques for them, even if you don't have the resources to get diagnosed and treated. I strongly suspect that I have Inattentive ADHD, but I couldn't seek a diagnosis while in college (or now). Learning study techniques and management strategies for people who have similar struggles would have been very helpful for me, rather than going with generic advice for people who had a more neurotypical brain.
Honor your bedtime. I know that college students like to stay up late and pull all-nighters, but my mental and physical health would have been a lot better if I made my nights as peaceful as possible and went to bed on time. Turn your night routine into a ritual. The hour or two before you go to bed should be to help you get a full night's rest. It's time for you, so be selfish and treat it like it's sacred. You deserve it.
disclaimer: this advice may or may not help you. take what works, and leave what doesn't work. it's okay if the advice given doesn't 100% apply to you.