How to stop a hangover in its tracks?

Hey all, 18F here. Tonight with dinner I had a big gin and tonic, and 2 and a half glasses of red wine. Wasn’t drunk but tipsy, and despite handling my alcohol well I am very hangover prone! Hangovers have oddly gotten worse the closer I’ve gotten to 18 – used to drink like it was going out of style at 16 and woke up feeling fine, but here we are! Anyways, I have a tennis match at 10.45 tomorrow morning and want to make sure I’m feeling alright for it. Any thoughts? Just chugged nearly a litre of water and gonna go to sleep soon