I have to say, my situation is really similar to yours.
I have started playing CS:GO last year, in mid June, I have over 1900 hours on the game, I played literally every day, managed to get up to MG1, basically, I was a huge addict. You see, before this I was an anime addict (watched over 200 titles) but I got addicted to CS:GO so much that I stopped watching anime.
I'm 18 right now, turning 19 next month, oh and I just finished my first year of University. I was studying IT, like you, and guess what, I failed lots of subjects. While I was attending university classes decently, during the first semester, I rarely attended during the second semester. and guess why... I was lazy I couldn't be bothered to just dress up, and go outside, because I was so damn lazy to even get out of my chair. And also gained a bit of weight.
As far as my parents go, my mom's sick. I mean really sick, some kind of disease, and I'm too scared to think about stuff that can happen. and guess what, she actually still works just to get money to earn money to pay for my university stuff. Did I mention it's a super difficult job? She even gave me some money for emergencies and I USED IT TO BUY A FREAKING GAMING MOUSE. I feel like I'm the worst son ever. My mom knows that I sit in front of the computer a lot, I think she thinks that I do university stuff, like coding and etc, and a bit of games. NOT 1900 HOURS OF GAME. (I don't wanna talk about my dad.) Did I mention that I live in a country that's super poor? like $200 per month for an average job?
So why was I playing CS:GO? why did I wanted to get better? What did I wanted to do after I would get to Global? I HAVE NO IDEA. So I just wasted my precious time in CS:GO rather than studying. Did I mention that one of the subjects I failed was computer related? That's what skipping lectures get you...
But things can change. You see, these last few weeks, I got bored of CS:GO, I don't play as much. I realized my mistakes and I'm trying to fix them.
Actually no, I'm thinking of building a better gaming PC (6700K, RX 480 and etc), already bought few parts because I'm an idiot.
I can spent all day explaining every little details, even more shit I faced but I feel like this is enough. What I'm trying to say is that this is a really common problem between people like us. Everyone has their dark story, life is a bitch. The point is, while it's fine to spend your free time to have fun, always to your university stuff first. Anyone who reads this and is facing a similar problem I wish you all the best luck.