Build plate pushed off Printer

My build plate keeps getting pushed off of the printer in the middle of multi day prints. I don’t have any pictures but you can imagine the belt plate sitting next to the printer and a pile of spaghetti out of the nozzle.
I’m using an upgraded Ender 3 with a creality glass bed. I’ve tightened all of the relevant bolts and ensured everything is snug. Please help, I’ve come home half a dozen times to failed prints like this.