Toddler has been melting down for the past 4 hours

She's overtired. Her birthday was a few days ago and her party with my family is tomorrow. She dropped her nap but DEFINITELY still needs a nap. She's overstimulated and overexcited. We've tried time outs, lullaby music, offering a soothing bath, handing her milk (chucked at my head), trying to read a book, leaving her in her room to de-escalate. Every time things simmer down, she goes back into meltdown mode at anything. It's just one of those days. Not needing advice, just venting because I am so, so tired.