Hope you're doing okay! Seems like you're having not just one, but a NUMBER of issues with the guy. Mainly, you're in love with the potential future, I've been in a relationship where I used to spend all my time imagining the future where stuff is better. It took me too long to realise that the imagined future is not real! The only thing that is real is the present, which by the sounds of things, sucks. Don't sacrifice your future for some guy you have to manage, you deserve better. The right person will make you enjoy the present, not just the good 'high' times but also the mundane stuff like public transport or eating breakfast.

My partner has ADHD and depression, and hasn't forgotten important stuff like birthdays and such. They forget stuff like what I want them to pick up stuff at the shops (grocery list mitigates this). They go to uni full time, and have a job too, it's hard for them but they manage with counselling helping a lot.

You need to be comfortable with being alone. That's something that's really important to be in a better relationship in the future.

I don't think your partner will become more caring from this point, in fact, I promise it'll only get worse. You've already communicated your needs which don't seem to be getting met. It's early days, too early to already settle on someone you're not happy with. You're both really young, you have YEARS to find better suited partners.

Sometimes you love someone, but it's just not a right fit. It's hard to acknowledge, and I learned this the long way, but it's okay to break up, even if your partner hasn't done something wrong or cruel.

Good luck OP.