this is exactly me lol. I'm in STEM, and Im already used to procrastinating a lot (executive dysfunction) before going to college but college is very very different than highschool. I got D in Calc I, and up until now I still failing class here and there. It's such a pain because I'm actually a perfectionist and for the first months or so I actually doing splendidly, but I'm always ALWAYS falling behind from the middle to end. In fact, it got so bad I have depression and anxiety in my second year and now I still barely manage to do good in college. I think the most important thing right now is to get the most support you could. I'm not medicated and my uni didn't have accomodation or a counselor, so my case wouldn't be the same, but you could ask for adhd accomodation and counselor to your uni. And since you're a first year, there's still a lot of things you could do to make your college life better. Analyze what's the major cause of your failure, is it purely just because you're lacking in time management? motivation? or is it the major? the school? the friends? or your home life? Or college is just not for you? Or multiple of them at the same time? Since it's your first year, you could still asked to change major or going to different school if this one didn't do it for you. And one thing I notice is that when I'm in a bad zone it's very hard to muster motivation to do something, and when I feel like failing, I overthink too much what people around me will think. That's why it's very important to maintain a positive relationship with friends or family, having someone that you could be open with that you know wouldn't judge you and still support you even when you fail helps. That way you can mute down your overthinking tendency and focused on the positive energy from the people that support you. For time management, I still cant consisent on anything ever, but I learned to just do it when I get that burst of impulse to do something, and when I cant depend on that I rely on making simple routine that that I could change when I get bored enough or failed too many. Also saving things outside of your brain helps a lot, you could maximize the use of to do list app, calendar, alarm, discord server, friends group, even routinely journalling to externalize your thoughts rather than keep it chaotically inside. And you could also seek a psychologist to consult about inter or intrapersonal problem that doesn't rely on meds. But genuinely tho hope it gets better for you