22F - was doing my ppt nd successfully completed it..but now I'm overwhelmed

I completed the ppt for today's project review..it's 4.15 am rn...around 2pm I have my review...I was preparing for it...now that I'm laying down on my bed..I'm unable to sleep...im supposed to wakeup at 8.30am again nd prepare...but I'm just so hyperactive mentally.. Every other scenario...it's very chaotic in my head...how can I even sleep when my mind so louddd