In my first year of uni I experienced this. It started after 2 consecutive nights of drinking. I woke up and felt fine, but as the day went on I constantly felt tipsy and dazed. Tbh this lasted 6 months. Hopefully yours will be less. Over the 6 months, I sort of got used to it and drinking always made it temporarily worse. The only thing that made it better was a big night out where I got really drunk. I woke up hazy again like the past 6 months, went to the libs and realised I could focus and wall normally again. I no longer felt numb. Nowadays, if I drink too much this feeling stays for weeks and then gets better. All I can say is stick it out, it will get better. Always look on the bright side, youre not disabled, blind or paralysed from the neck down.