i accidently drank too much, how can I prevent a hangover?

Hello! I had a pretty rough night. I haven’t drunk for a while, and this is very hard to type, so if there are any errors, I’m sorry.

Long story short, my tolerance went way down because I just subconsciously haven’t been drinking. I had a hard day at work and decided I deserved to get drunk. I cracked open some malibu, and drank how much I usually drink. Little did I know, I hadn’t actually fully been drunk for a long time, and my tolerance went WAYYY down. I have to get up early for my sister’s grad party and don’t want to be hungover. I want to fully enjoy my sister’s last moment of high school. What can I do to prevent a hangover? I just know I’m going to have one if I do nothing.

(SPECIAL THANKS TO GRAMMARLY LOLL)