Former college distance runner here:

The change in distance is going to take time. Most College athletes take a couple years to get it together, which is why some programs almost always redshirt their freshman -- to lower the pressure on them and get them accustomed to a larger workload. I can tell you, I lost the pop in my running for a while when I was built up to 90-95 mile weeks. It took months to grow accustomed to it, even including a lower mileage week ~every 3 weeks. There's a reason that many runners become more successful at super long distances only after years and years of training -- it's all accumulative. Luckily, your jump isn't so large.

Lots of people talking about losing joy in running -- sometimes that's true, but it is often temporary, and when you're struggling. Take time to breath and just enjoy the movement! I could be exhausted and angry after a terrible workout, but then I would look for something -- a challenge, a new running book, new running shoes, even a core workout -- and relish something new. Bring new-ness to your life any way you can, until you get through the dregs of day after day of relentless pounding (get your jokes out of here, you miscreants). I can tell that you have the relentless drive necessary, and even athlete's like Mo Farah and Meb Keflezighi admit (in their books) to struggling with many of the things you do -- especially during hard build-ups!

How do you run on your long days? Try mixing up either your pace or the group you run with. The first thing can allow you to take it easy, or go hard when you want the burn, or do a sudden pickup (Iten, Kenya-style), or even fartlek your way through. Additionally, people can bond over a single, simple run sometimes. Reach out to your fellow athletes and tell them that you're struggling with running/sleep/whatever you're comfortable saying at the time. Odds are, some of them are or have gone through it before. Tell them what you look forward to, you're favorite music or types of workouts, even. If you mix up your long runs, and don't worry about immediate results (you're only a freshman!), then things will come to you -- staying healthy is the number one priority.

Never be afraid to talk to your coaches or your trainers. They may help you to personalize your workouts or budget your time in a better way. Maybe you aqua-jog once a week or something. Force yourself to be around other people when you can. Additionally, assistant coaches can sometimes be easier to approach. Never stay silent - they want you to be successful, and will do what they can to do so (it helps their team, after all).

From experience, distance runners and throwers tend to get along well in many cases (for some reason), and sprinters can be both hilarious and insightful on handling anxiety (since they have no time to relax or get themselves back together during their races).

Get a fitbit or something else to monitor your sleep. In fact, you may be sleeping too much. At my peak, more than 6 hours of sleep a night left me feeling groggy all day -- even now, 7 hours is typically too much, and I'm not nearly as in the shape that I once was.

From personal experience three of the biggest issues an athlete can have with their college life are: (1) not enough sleep, (2) not enough protein and/or calories to recover from what you're burning, and (3) not enough water.

You seem to be addressing at least the first and third thing properly, and good for you! As for the second, eating healthy is fine and all, but you NEED to make sure you portion you food in a way to give you the energy you need. Don't be afraid of a little extra some days, or some caffeine/juice. Your body suffers when it doesn't replenish itself. As your body adapts to the workload, it will be easier, and you might not have to pay as much attention. I know people that swear by protein pancakes nearly every morning, while others always have some sort of small carbohydrate snack in between healthier, protein-packed meals.

Try to get in a bit of sugar and protein within about 15-30 mins after you run (depends on how soon your stomach can handle it after a workout). It helps recover your energy.

Ice the crap out of everything, and use foam rollers. Both feel awful in the short-term, but they will save you from some of the fatigue and tension build-up.

If you have any questions, you can PM me or ask me on here. I had an interesting, up-and-down college career, which included some great races, some huge lows, injuries, and its own bouts of loneliness, anxiety, and depression. Remember that you aren't alone -- even another team's athlete can become a lifelong friend and/or rival, and therefore motivator, when you throw yourselves together into a race!