If i'm in the DEP for the US Marine Corps, and i don't make the IST run time by my ship date, what happens?

i guess you can say i slacked off for about 5 months. now, i have a little less than a week to run a 1.5 mi in less than 13:30. my best time is about 14:50. my crunches is 55, and pull-ups is 6. what's going to happen to me????