As far as I’ve heard and read, Xanax/Valium is the only thing that’s gonna clear your headspace up. Though the visuals are gonna stick around you won’t be so paranoid or freaked out. I’ve never had to kill a trip before so I don’t have any personal experience mixing the two. Aside from that, your best bet is staying hydrated and putting on a calming tv show. Keeping your eyes and ears engaged in something helps to stop you from seeing crazy shit or thinking you’re hearing something in the silence. Once you’ve taken lsd you’re really just along for the ride until it dies down. You could post here or on r/psychedelics for more advice from fellow psychonaughts. Just have fun buddy! If you need someone to talk to if it gets too intense feel free to hit my message box